立即执行函数(IIFE)的理解与运用
作为JavaScript的常用语法，立即执行函数IIFE(Immediately-Invoked Function Expression)是值得我们认真去学习探究的。
一、创建函数的两种方式
我们先从基础讲起，要创建一个JS函数，有两种方式。
（一）函数定义（Function Declaration）
function Identifier ( Parameters ){ FunctionBody }
函数定义中，参数（Parameters）标识符（Identifier ）是必不可少的。如果遗漏，会报提示如下错误：Expected identifier
（二）函数表达式（Function Expression）
function Identifier(Parameters){ FunctionBody }
函数表达式中，参数和标识符都是可选的。
那么我们是不是可以通过有无标识符来判断，创建函数的是一个函数定义，还是一个函数表达式呢？很遗憾，不行！
我们刚刚说过，函数表达式中标识符是可选的。那如果函数表达式有标识符，又该如何判断？
其实，"function Identifier(Parameters){ FunctionBody }"并不是一个完整的函数表达式，完整的函数的表达式，需要一个赋值操作。
比如： var name=function Identifier(Parameters){ FunctionBody }
这里的Identifier常常被省略，至于为什么，由于该主题内容涉及面较广，在此文中不作讨论。
好了。两种创建函数的方式实例如下：
//function expression
var myExpression = function () { return window.location }
//function declaration
function myDeclaration() { return window.location.hostname }
二、立即执行函数
顾名思义，立即执行函数可以让你的函数在创建后立即执行。
（一）基本结构
这样的函数有多常用呢，我们可以看看下面的代码：
(function( window, undefined ) {
//……
})(window);
这段代码，大家一定不会陌生。是的，它就是我们"Write less, do more"的jQuery。
jQuery整个文件就是一个立即执行函数。
(function(){})(); 是立即执行函数常用的表现形式之一。
另一种也很常用：
(function(){}());
以上两种是比较常用的写法，但立即执行函数的写法因人而异。记住以下两点就可以了。
如果是函数表达式，可直接在其后加"()"立即执行。
如果是函数声明，可以通过"()"、"+"、"-"、"void"、"new"等运算符将其转换为函数表达式，然后再加"()"立即执行。
比如，下面的写法也是没有问题的。
void function(){}(alert("ok"));
在执行前，可以在最后调用的"()"传入我们需要的参数，比如jQuery就把window对象作为实参传入了立即函数内部。
（二）使用时机
什么时候需要用到立即执行函数呢？
1.当我们需要写一个js文件，并且复用率很高的时候，建议使用。
2.如果声明的函数只需要调用一次，建议使用。
3.独立模块，这个和第一点差不多。单独提出来，是想强调一下立即执行函数的好处，开发时，它能做到各模块的低耦合，减少对全局作用域的污染。
（三）实例及好处
无实例，无真相。找什么实例好呢？还是我们的jQuery吧。
/*!
* jQuery JavaScript Library v1.4.4
* http://jquery.com/
*
* Copyright 2010, John Resig
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* Includes Sizzle.js
* http://sizzlejs.com/
* Copyright 2010, The Dojo Foundation
* Released under the MIT, BSD, and GPL Licenses.
*
* Date: Thu Nov 11 19:04:53 2010 -0500
*/
(function( window, undefined ) { // Use the correct document accordingly with window argument (sandbox)
var document = window.document;
var jQuery = (function() { // Define a local copy of jQuery
var jQuery = function( selector, context ) {
// The jQuery object is actually just the init constructor 'enhanced'
return new jQuery.fn.init( selector, context );
}, // Map over jQuery in case of overwrite
_jQuery = window.jQuery, // Map over the $ in case of overwrite
_$ = window.$, // A central reference to the root jQuery(document)
rootjQuery, // A simple way to check for HTML strings or ID strings
// (both of which we optimize for)
quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/, // Is it a simple selector
isSimple = /^.[^:#\[\.,]*$/, // Check if a string has a non-whitespace character in it
rnotwhite = /\S/,
rwhite = /\s/, // Used for trimming whitespace
trimLeft = /^\s+/,
trimRight = /\s+$/, // Check for non-word characters
rnonword = /\W/, // Check for digits
rdigit = /\d/, // Match a standalone tag
rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/, // JSON RegExp
rvalidchars = /^[\],:{}\s]*$/,
rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g, // Useragent RegExp
rwebkit = /(webkit)[ \/]([\w.]+)/,
ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/,
rmsie = /(msie) ([\w.]+)/,
rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/, // Keep a UserAgent string for use with jQuery.browser
userAgent = navigator.userAgent, // For matching the engine and version of the browser
browserMatch, // Has the ready events already been bound?
readyBound = false, // The functions to execute on DOM ready
readyList = [], // The ready event handler
DOMContentLoaded, // Save a reference to some core methods
toString = Object.prototype.toString,
hasOwn = Object.prototype.hasOwnProperty,
push = Array.prototype.push,
slice = Array.prototype.slice,
trim = String.prototype.trim,
indexOf = Array.prototype.indexOf, // [[Class]] -> type pairs
class2type = {}; jQuery.fn = jQuery.prototype = {
init: function( selector, context ) {
var match, elem, ret, doc; // Handle $(""), $(null), or $(undefined)
if ( !selector ) {
return this;
} // Handle $(DOMElement)
if ( selector.nodeType ) {
this.context = this[0] = selector;
this.length = 1;
return this;
} // The body element only exists once, optimize finding it
if ( selector === "body" && !context && document.body ) {
this.context = document;
this[0] = document.body;
this.selector = "body";
this.length = 1;
return this;
} // Handle HTML strings
if ( typeof selector === "string" ) {
// Are we dealing with HTML string or an ID?
match = quickExpr.exec( selector ); // Verify a match, and that no context was specified for #id
if ( match && (match[1] || !context) ) { // HANDLE: $(html) -> $(array)
if ( match[1] ) {
doc = (context ? context.ownerDocument || context : document); // If a single string is passed in and it's a single tag
// just do a createElement and skip the rest
ret = rsingleTag.exec( selector ); if ( ret ) {
if ( jQuery.isPlainObject( context ) ) {
selector = [ document.createElement( ret[1] ) ];
jQuery.fn.attr.call( selector, context, true ); } else {
selector = [ doc.createElement( ret[1] ) ];
} } else {
ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
} return jQuery.merge( this, selector ); // HANDLE: $("#id")
} else {
elem = document.getElementById( match[2] ); // Check parentNode to catch when Blackberry 4.6 returns
// nodes that are no longer in the document #6963
if ( elem && elem.parentNode ) {
// Handle the case where IE and Opera return items
// by name instead of ID
if ( elem.id !== match[2] ) {
return rootjQuery.find( selector );
} // Otherwise, we inject the element directly into the jQuery object
this.length = 1;
this[0] = elem;
} this.context = document;
this.selector = selector;
return this;
} // HANDLE: $("TAG")
} else if ( !context && !rnonword.test( selector ) ) {
this.selector = selector;
this.context = document;
selector = document.getElementsByTagName( selector );
return jQuery.merge( this, selector ); // HANDLE: $(expr, $(...))
} else if ( !context || context.jquery ) {
return (context || rootjQuery).find( selector ); // HANDLE: $(expr, context)
// (which is just equivalent to: $(context).find(expr)
} else {
return jQuery( context ).find( selector );
} // HANDLE: $(function)
// Shortcut for document ready
} else if ( jQuery.isFunction( selector ) ) {
return rootjQuery.ready( selector );
} if (selector.selector !== undefined) {
this.selector = selector.selector;
this.context = selector.context;
} return jQuery.makeArray( selector, this );
}, // Start with an empty selector
selector: "", // The current version of jQuery being used
jquery: "1.4.4", // The default length of a jQuery object is 0
length: 0, // The number of elements contained in the matched element set
size: function() {
return this.length;
}, toArray: function() {
return slice.call( this, 0 );
}, // Get the Nth element in the matched element set OR
// Get the whole matched element set as a clean array
get: function( num ) {
return num == null ? // Return a 'clean' array
this.toArray() : // Return just the object
( num < 0 ? this.slice(num)[ 0 ] : this[ num ] );
}, // Take an array of elements and push it onto the stack
// (returning the new matched element set)
pushStack: function( elems, name, selector ) {
// Build a new jQuery matched element set
var ret = jQuery(); if ( jQuery.isArray( elems ) ) {
push.apply( ret, elems ); } else {
jQuery.merge( ret, elems );
} // Add the old object onto the stack (as a reference)
ret.prevObject = this; ret.context = this.context; if ( name === "find" ) {
ret.selector = this.selector + (this.selector ? " " : "") + selector;
} else if ( name ) {
ret.selector = this.selector + "." + name + "(" + selector + ")";
} // Return the newly-formed element set
return ret;
}, // Execute a callback for every element in the matched set.
// (You can seed the arguments with an array of args, but this is
// only used internally.)
each: function( callback, args ) {
return jQuery.each( this, callback, args );
}, ready: function( fn ) {
// Attach the listeners
jQuery.bindReady(); // If the DOM is already ready
if ( jQuery.isReady ) {
// Execute the function immediately
fn.call( document, jQuery ); // Otherwise, remember the function for later
} else if ( readyList ) {
// Add the function to the wait list
readyList.push( fn );
} return this;
}, eq: function( i ) {
return i === -1 ?
this.slice( i ) :
this.slice( i, +i + 1 );
}, first: function() {
return this.eq( 0 );
}, last: function() {
return this.eq( -1 );
}, slice: function() {
return this.pushStack( slice.apply( this, arguments ),
"slice", slice.call(arguments).join(",") );
}, map: function( callback ) {
return this.pushStack( jQuery.map(this, function( elem, i ) {
return callback.call( elem, i, elem );
}));
}, end: function() {
return this.prevObject || jQuery(null);
}, // For internal use only.
// Behaves like an Array's method, not like a jQuery method.
push: push,
sort: [].sort,
splice: [].splice
}; // Give the init function the jQuery prototype for later instantiation
jQuery.fn.init.prototype = jQuery.fn; jQuery.extend = jQuery.fn.extend = function() {
var options, name, src, copy, copyIsArray, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false; // Handle a deep copy situation
if ( typeof target === "boolean" ) {
deep = target;
target = arguments[1] || {};
// skip the boolean and the target
i = 2;
} // Handle case when target is a string or something (possible in deep copy)
if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
target = {};
} // extend jQuery itself if only one argument is passed
if ( length === i ) {
target = this;
--i;
} for ( ; i < length; i++ ) {
// Only deal with non-null/undefined values
if ( (options = arguments[ i ]) != null ) {
// Extend the base object
for ( name in options ) {
src = target[ name ];
copy = options[ name ]; // Prevent never-ending loop
if ( target === copy ) {
continue;
} // Recurse if we're merging plain objects or arrays
if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
if ( copyIsArray ) {
copyIsArray = false;
clone = src && jQuery.isArray(src) ? src : []; } else {
clone = src && jQuery.isPlainObject(src) ? src : {};
} // Never move original objects, clone them
target[ name ] = jQuery.extend( deep, clone, copy ); // Don't bring in undefined values
} else if ( copy !== undefined ) {
target[ name ] = copy;
}
}
}
} // Return the modified object
return target;
}; jQuery.extend({
noConflict: function( deep ) {
window.$ = _$; if ( deep ) {
window.jQuery = _jQuery;
} return jQuery;
}, // Is the DOM ready to be used? Set to true once it occurs.
isReady: false, // A counter to track how many items to wait for before
// the ready event fires. See #6781
readyWait: 1, // Handle when the DOM is ready
ready: function( wait ) {
// A third-party is pushing the ready event forwards
if ( wait === true ) {
jQuery.readyWait--;
} // Make sure that the DOM is not already loaded
if ( !jQuery.readyWait || (wait !== true && !jQuery.isReady) ) {
// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
if ( !document.body ) {
return setTimeout( jQuery.ready, 1 );
} // Remember that the DOM is ready
jQuery.isReady = true; // If a normal DOM Ready event fired, decrement, and wait if need be
if ( wait !== true && --jQuery.readyWait > 0 ) {
return;
} // If there are functions bound, to execute
if ( readyList ) {
// Execute all of them
var fn,
i = 0,
ready = readyList; // Reset the list of functions
readyList = null; while ( (fn = ready[ i++ ]) ) {
fn.call( document, jQuery );
} // Trigger any bound ready events
if ( jQuery.fn.trigger ) {
jQuery( document ).trigger( "ready" ).unbind( "ready" );
}
}
}
}, bindReady: function() {
if ( readyBound ) {
return;
} readyBound = true; // Catch cases where $(document).ready() is called after the
// browser event has already occurred.
if ( document.readyState === "complete" ) {
// Handle it asynchronously to allow scripts the opportunity to delay ready
return setTimeout( jQuery.ready, 1 );
} // Mozilla, Opera and webkit nightlies currently support this event
if ( document.addEventListener ) {
// Use the handy event callback
document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false ); // A fallback to window.onload, that will always work
window.addEventListener( "load", jQuery.ready, false ); // If IE event model is used
} else if ( document.attachEvent ) {
// ensure firing before onload,
// maybe late but safe also for iframes
document.attachEvent("onreadystatechange", DOMContentLoaded); // A fallback to window.onload, that will always work
window.attachEvent( "onload", jQuery.ready ); // If IE and not a frame
// continually check to see if the document is ready
var toplevel = false; try {
toplevel = window.frameElement == null;
} catch(e) {} if ( document.documentElement.doScroll && toplevel ) {
doScrollCheck();
}
}
}, // See test/unit/core.js for details concerning isFunction.
// Since version 1.3, DOM methods and functions like alert
// aren't supported. They return false on IE (#2968).
isFunction: function( obj ) {
return jQuery.type(obj) === "function";
}, isArray: Array.isArray || function( obj ) {
return jQuery.type(obj) === "array";
}, // A crude way of determining if an object is a window
isWindow: function( obj ) {
return obj && typeof obj === "object" && "setInterval" in obj;
}, isNaN: function( obj ) {
return obj == null || !rdigit.test( obj ) || isNaN( obj );
}, type: function( obj ) {
return obj == null ?
String( obj ) :
class2type[ toString.call(obj) ] || "object";
}, isPlainObject: function( obj ) {
// Must be an Object.
// Because of IE, we also have to check the presence of the constructor property.
// Make sure that DOM nodes and window objects don't pass through, as well
if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
return false;
} // Not own constructor property must be Object
if ( obj.constructor &&
!hasOwn.call(obj, "constructor") &&
!hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
return false;
} // Own properties are enumerated firstly, so to speed up,
// if last one is own, then all properties are own. var key;
for ( key in obj ) {} return key === undefined || hasOwn.call( obj, key );
}, isEmptyObject: function( obj ) {
for ( var name in obj ) {
return false;
}
return true;
}, error: function( msg ) {
throw msg;
}, parseJSON: function( data ) {
if ( typeof data !== "string" || !data ) {
return null;
} // Make sure leading/trailing whitespace is removed (IE can't handle it)
data = jQuery.trim( data ); // Make sure the incoming data is actual JSON
// Logic borrowed from http://json.org/json2.js
if ( rvalidchars.test(data.replace(rvalidescape, "@")
.replace(rvalidtokens, "]")
.replace(rvalidbraces, "")) ) { // Try to use the native JSON parser first
return window.JSON && window.JSON.parse ?
window.JSON.parse( data ) :
(new Function("return " + data))(); } else {
jQuery.error( "Invalid JSON: " + data );
}
}, noop: function() {}, // Evalulates a script in a global context
globalEval: function( data ) {
if ( data && rnotwhite.test(data) ) {
// Inspired by code by Andrea Giammarchi
// http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
var head = document.getElementsByTagName("head")[0] || document.documentElement,
script = document.createElement("script"); script.type = "text/javascript"; if ( jQuery.support.scriptEval ) {
script.appendChild( document.createTextNode( data ) );
} else {
script.text = data;
} // Use insertBefore instead of appendChild to circumvent an IE6 bug.
// This arises when a base node is used (#2709).
head.insertBefore( script, head.firstChild );
head.removeChild( script );
}
}, nodeName: function( elem, name ) {
return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
}, // args is for internal usage only
each: function( object, callback, args ) {
var name, i = 0,
length = object.length,
isObj = length === undefined || jQuery.isFunction(object); if ( args ) {
if ( isObj ) {
for ( name in object ) {
if ( callback.apply( object[ name ], args ) === false ) {
break;
}
}
} else {
for ( ; i < length; ) {
if ( callback.apply( object[ i++ ], args ) === false ) {
break;
}
}
} // A special, fast, case for the most common use of each
} else {
if ( isObj ) {
for ( name in object ) {
if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
break;
}
}
} else {
for ( var value = object[0];
i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
}
} return object;
}, // Use native String.trim function wherever possible
trim: trim ?
function( text ) {
return text == null ?
"" :
trim.call( text );
} : // Otherwise use our own trimming functionality
function( text ) {
return text == null ?
"" :
text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
}, // results is for internal usage only
makeArray: function( array, results ) {
var ret = results || []; if ( array != null ) {
// The window, strings (and functions) also have 'length'
// The extra typeof function check is to prevent crashes
// in Safari 2 (See: #3039)
// Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
var type = jQuery.type(array); if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) {
push.call( ret, array );
} else {
jQuery.merge( ret, array );
}
} return ret;
}, inArray: function( elem, array ) {
if ( array.indexOf ) {
return array.indexOf( elem );
} for ( var i = 0, length = array.length; i < length; i++ ) {
if ( array[ i ] === elem ) {
return i;
}
} return -1;
}, merge: function( first, second ) {
var i = first.length,
j = 0; if ( typeof second.length === "number" ) {
for ( var l = second.length; j < l; j++ ) {
first[ i++ ] = second[ j ];
} } else {
while ( second[j] !== undefined ) {
first[ i++ ] = second[ j++ ];
}
} first.length = i; return first;
}, grep: function( elems, callback, inv ) {
var ret = [], retVal;
inv = !!inv; // Go through the array, only saving the items
// that pass the validator function
for ( var i = 0, length = elems.length; i < length; i++ ) {
retVal = !!callback( elems[ i ], i );
if ( inv !== retVal ) {
ret.push( elems[ i ] );
}
} return ret;
}, // arg is for internal usage only
map: function( elems, callback, arg ) {
var ret = [], value; // Go through the array, translating each of the items to their
// new value (or values).
for ( var i = 0, length = elems.length; i < length; i++ ) {
value = callback( elems[ i ], i, arg ); if ( value != null ) {
ret[ ret.length ] = value;
}
} return ret.concat.apply( [], ret );
}, // A global GUID counter for objects
guid: 1, proxy: function( fn, proxy, thisObject ) {
if ( arguments.length === 2 ) {
if ( typeof proxy === "string" ) {
thisObject = fn;
fn = thisObject[ proxy ];
proxy = undefined; } else if ( proxy && !jQuery.isFunction( proxy ) ) {
thisObject = proxy;
proxy = undefined;
}
} if ( !proxy && fn ) {
proxy = function() {
return fn.apply( thisObject || this, arguments );
};
} // Set the guid of unique handler to the same of original handler, so it can be removed
if ( fn ) {
proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
} // So proxy can be declared as an argument
return proxy;
}, // Mutifunctional method to get and set values to a collection
// The value/s can be optionally by executed if its a function
access: function( elems, key, value, exec, fn, pass ) {
var length = elems.length; // Setting many attributes
if ( typeof key === "object" ) {
for ( var k in key ) {
jQuery.access( elems, k, key[k], exec, fn, value );
}
return elems;
} // Setting one attribute
if ( value !== undefined ) {
// Optionally, function values get executed if exec is true
exec = !pass && exec && jQuery.isFunction(value); for ( var i = 0; i < length; i++ ) {
fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
} return elems;
} // Getting an attribute
return length ? fn( elems[0], key ) : undefined;
}, now: function() {
return (new Date()).getTime();
}, // Use of jQuery.browser is frowned upon.
// More details: http://docs.jquery.com/Utilities/jQuery.browser
uaMatch: function( ua ) {
ua = ua.toLowerCase(); var match = rwebkit.exec( ua ) ||
ropera.exec( ua ) ||
rmsie.exec( ua ) ||
ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) ||
[]; return { browser: match[1] || "", version: match[2] || "0" };
}, browser: {}
}); // Populate the class2type map
jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
class2type[ "[object " + name + "]" ] = name.toLowerCase();
}); browserMatch = jQuery.uaMatch( userAgent );
if ( browserMatch.browser ) {
jQuery.browser[ browserMatch.browser ] = true;
jQuery.browser.version = browserMatch.version;
} // Deprecated, use jQuery.browser.webkit instead
if ( jQuery.browser.webkit ) {
jQuery.browser.safari = true;
} if ( indexOf ) {
jQuery.inArray = function( elem, array ) {
return indexOf.call( array, elem );
};
} // Verify that \s matches non-breaking spaces
// (IE fails on this test)
if ( !rwhite.test( "\xA0" ) ) {
trimLeft = /^[\s\xA0]+/;
trimRight = /[\s\xA0]+$/;
} // All jQuery objects should point back to these
rootjQuery = jQuery(document); // Cleanup functions for the document ready method
if ( document.addEventListener ) {
DOMContentLoaded = function() {
document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
jQuery.ready();
}; } else if ( document.attachEvent ) {
DOMContentLoaded = function() {
// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
if ( document.readyState === "complete" ) {
document.detachEvent( "onreadystatechange", DOMContentLoaded );
jQuery.ready();
}
};
} // The DOM ready check for Internet Explorer
function doScrollCheck() {
if ( jQuery.isReady ) {
return;
} try {
// If IE is used, use the trick by Diego Perini
// http://javascript.nwbox.com/IEContentLoaded/
document.documentElement.doScroll("left");
} catch(e) {
setTimeout( doScrollCheck, 1 );
return;
} // and execute any waiting functions
jQuery.ready();
} // Expose jQuery to the global object
return (window.jQuery = window.$ = jQuery); })(); (function() { jQuery.support = {}; var root = document.documentElement,
script = document.createElement("script"),
div = document.createElement("div"),
id = "script" + jQuery.now(); div.style.display = "none";
div.innerHTML = " <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>"; var all = div.getElementsByTagName("*"),
a = div.getElementsByTagName("a")[0],
select = document.createElement("select"),
opt = select.appendChild( document.createElement("option") ); // Can't get basic test support
if ( !all || !all.length || !a ) {
return;
} jQuery.support = {
// IE strips leading whitespace when .innerHTML is used
leadingWhitespace: div.firstChild.nodeType === 3, // Make sure that tbody elements aren't automatically inserted
// IE will insert them into empty tables
tbody: !div.getElementsByTagName("tbody").length, // Make sure that link elements get serialized correctly by innerHTML
// This requires a wrapper element in IE
htmlSerialize: !!div.getElementsByTagName("link").length, // Get the style information from getAttribute
// (IE uses .cssText insted)
style: /red/.test( a.getAttribute("style") ), // Make sure that URLs aren't manipulated
// (IE normalizes it by default)
hrefNormalized: a.getAttribute("href") === "/a", // Make sure that element opacity exists
// (IE uses filter instead)
// Use a regex to work around a WebKit issue. See #5145
opacity: /^0.55$/.test( a.style.opacity ), // Verify style float existence
// (IE uses styleFloat instead of cssFloat)
cssFloat: !!a.style.cssFloat, // Make sure that if no value is specified for a checkbox
// that it defaults to "on".
// (WebKit defaults to "" instead)
checkOn: div.getElementsByTagName("input")[0].value === "on", // Make sure that a selected-by-default option has a working selected property.
// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
optSelected: opt.selected, // Will be defined later
deleteExpando: true,
optDisabled: false,
checkClone: false,
scriptEval: false,
noCloneEvent: true,
boxModel: null,
inlineBlockNeedsLayout: false,
shrinkWrapBlocks: false,
reliableHiddenOffsets: true
}; // Make sure that the options inside disabled selects aren't marked as disabled
// (WebKit marks them as diabled)
select.disabled = true;
jQuery.support.optDisabled = !opt.disabled; script.type = "text/javascript";
try {
script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
} catch(e) {} root.insertBefore( script, root.firstChild ); // Make sure that the execution of code works by injecting a script
// tag with appendChild/createTextNode
// (IE doesn't support this, fails, and uses .text instead)
if ( window[ id ] ) {
jQuery.support.scriptEval = true;
delete window[ id ];
} // Test to see if it's possible to delete an expando from an element
// Fails in Internet Explorer
try {
delete script.test; } catch(e) {
jQuery.support.deleteExpando = false;
} root.removeChild( script ); if ( div.attachEvent && div.fireEvent ) {
div.attachEvent("onclick", function click() {
// Cloning a node shouldn't copy over any
// bound event handlers (IE does this)
jQuery.support.noCloneEvent = false;
div.detachEvent("onclick", click);
});
div.cloneNode(true).fireEvent("onclick");
} div = document.createElement("div");
div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>"; var fragment = document.createDocumentFragment();
fragment.appendChild( div.firstChild ); // WebKit doesn't clone checked state correctly in fragments
jQuery.support.checkClone = fragment.cloneNode(true).cloneNode(true).lastChild.checked; // Figure out if the W3C box model works as expected
// document.body must exist before we can do this
jQuery(function() {
var div = document.createElement("div");
div.style.width = div.style.paddingLeft = "1px"; document.body.appendChild( div );
jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2; if ( "zoom" in div.style ) {
// Check if natively block-level elements act like inline-block
// elements when setting their display to 'inline' and giving
// them layout
// (IE < 8 does this)
div.style.display = "inline";
div.style.zoom = 1;
jQuery.support.inlineBlockNeedsLayout = div.offsetWidth === 2; // Check if elements with layout shrink-wrap their children
// (IE 6 does this)
div.style.display = "";
div.innerHTML = "<div style='width:4px;'></div>";
jQuery.support.shrinkWrapBlocks = div.offsetWidth !== 2;
} div.innerHTML = "<table><tr><td style='padding:0;display:none'></td><td>t</td></tr></table>";
var tds = div.getElementsByTagName("td"); // Check if table cells still have offsetWidth/Height when they are set
// to display:none and there are still other visible table cells in a
// table row; if so, offsetWidth/Height are not reliable for use when
// determining if an element has been hidden directly using
// display:none (it is still safe to use offsets if a parent element is
// hidden; don safety goggles and see bug #4512 for more information).
// (only IE 8 fails this test)
jQuery.support.reliableHiddenOffsets = tds[0].offsetHeight === 0; tds[0].style.display = "";
tds[1].style.display = "none"; // Check if empty table cells still have offsetWidth/Height
// (IE < 8 fail this test)
jQuery.support.reliableHiddenOffsets = jQuery.support.reliableHiddenOffsets && tds[0].offsetHeight === 0;
div.innerHTML = ""; document.body.removeChild( div ).style.display = "none";
div = tds = null;
}); // Technique from Juriy Zaytsev
// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
var eventSupported = function( eventName ) {
var el = document.createElement("div");
eventName = "on" + eventName; var isSupported = (eventName in el);
if ( !isSupported ) {
el.setAttribute(eventName, "return;");
isSupported = typeof el[eventName] === "function";
}
el = null; return isSupported;
}; jQuery.support.submitBubbles = eventSupported("submit");
jQuery.support.changeBubbles = eventSupported("change"); // release memory in IE
root = script = div = all = a = null;
})(); var windowData = {},
rbrace = /^(?:\{.*\}|\[.*\])$/; jQuery.extend({
cache: {}, // Please use with caution
uuid: 0, // Unique for each copy of jQuery on the page
expando: "jQuery" + jQuery.now(), // The following elements throw uncatchable exceptions if you
// attempt to add expando properties to them.
noData: {
"embed": true,
// Ban all objects except for Flash (which handle expandos)
"object": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",
"applet": true
}, data: function( elem, name, data ) {
if ( !jQuery.acceptData( elem ) ) {
return;
} elem = elem == window ?
windowData :
elem; var isNode = elem.nodeType,
id = isNode ? elem[ jQuery.expando ] : null,
cache = jQuery.cache, thisCache; if ( isNode && !id && typeof name === "string" && data === undefined ) {
return;
} // Get the data from the object directly
if ( !isNode ) {
cache = elem; // Compute a unique ID for the element
} else if ( !id ) {
elem[ jQuery.expando ] = id = ++jQuery.uuid;
} // Avoid generating a new cache unless none exists and we
// want to manipulate it.
if ( typeof name === "object" ) {
if ( isNode ) {
cache[ id ] = jQuery.extend(cache[ id ], name); } else {
jQuery.extend( cache, name );
} } else if ( isNode && !cache[ id ] ) {
cache[ id ] = {};
} thisCache = isNode ? cache[ id ] : cache; // Prevent overriding the named cache with undefined values
if ( data !== undefined ) {
thisCache[ name ] = data;
} return typeof name === "string" ? thisCache[ name ] : thisCache;
}, removeData: function( elem, name ) {
if ( !jQuery.acceptData( elem ) ) {
return;
} elem = elem == window ?
windowData :
elem; var isNode = elem.nodeType,
id = isNode ? elem[ jQuery.expando ] : elem,
cache = jQuery.cache,
thisCache = isNode ? cache[ id ] : id; // If we want to remove a specific section of the element's data
if ( name ) {
if ( thisCache ) {
// Remove the section of cache data
delete thisCache[ name ]; // If we've removed all the data, remove the element's cache
if ( isNode && jQuery.isEmptyObject(thisCache) ) {
jQuery.removeData( elem );
}
} // Otherwise, we want to remove all of the element's data
} else {
if ( isNode && jQuery.support.deleteExpando ) {
delete elem[ jQuery.expando ]; } else if ( elem.removeAttribute ) {
elem.removeAttribute( jQuery.expando ); // Completely remove the data cache
} else if ( isNode ) {
delete cache[ id ]; // Remove all fields from the object
} else {
for ( var n in elem ) {
delete elem[ n ];
}
}
}
}, // A method for determining if a DOM node can handle the data expando
acceptData: function( elem ) {
if ( elem.nodeName ) {
var match = jQuery.noData[ elem.nodeName.toLowerCase() ]; if ( match ) {
return !(match === true || elem.getAttribute("classid") !== match);
}
} return true;
}
}); jQuery.fn.extend({
data: function( key, value ) {
var data = null; if ( typeof key === "undefined" ) {
if ( this.length ) {
var attr = this[0].attributes, name;
data = jQuery.data( this[0] ); for ( var i = 0, l = attr.length; i < l; i++ ) {
name = attr[i].name; if ( name.indexOf( "data-" ) === 0 ) {
name = name.substr( 5 );
dataAttr( this[0], name, data[ name ] );
}
}
} return data; } else if ( typeof key === "object" ) {
return this.each(function() {
jQuery.data( this, key );
});
} var parts = key.split(".");
parts[1] = parts[1] ? "." + parts[1] : ""; if ( value === undefined ) {
data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]); // Try to fetch any internally stored data first
if ( data === undefined && this.length ) {
data = jQuery.data( this[0], key );
data = dataAttr( this[0], key, data );
} return data === undefined && parts[1] ?
this.data( parts[0] ) :
data; } else {
return this.each(function() {
var $this = jQuery( this ),
args = [ parts[0], value ]; $this.triggerHandler( "setData" + parts[1] + "!", args );
jQuery.data( this, key, value );
$this.triggerHandler( "changeData" + parts[1] + "!", args );
});
}
}, removeData: function( key ) {
return this.each(function() {
jQuery.removeData( this, key );
});
}
}); function dataAttr( elem, key, data ) {
// If nothing was found internally, try to fetch any
// data from the HTML5 data-* attribute
if ( data === undefined && elem.nodeType === 1 ) {
data = elem.getAttribute( "data-" + key ); if ( typeof data === "string" ) {
try {
data = data === "true" ? true :
data === "false" ? false :
data === "null" ? null :
!jQuery.isNaN( data ) ? parseFloat( data ) :
rbrace.test( data ) ? jQuery.parseJSON( data ) :
data;
} catch( e ) {} // Make sure we set the data so it isn't changed later
jQuery.data( elem, key, data ); } else {
data = undefined;
}
} return data;
} jQuery.extend({
queue: function( elem, type, data ) {
if ( !elem ) {
return;
} type = (type || "fx") + "queue";
var q = jQuery.data( elem, type ); // Speed up dequeue by getting out quickly if this is just a lookup
if ( !data ) {
return q || [];
} if ( !q || jQuery.isArray(data) ) {
q = jQuery.data( elem, type, jQuery.makeArray(data) ); } else {
q.push( data );
} return q;
}, dequeue: function( elem, type ) {
type = type || "fx"; var queue = jQuery.queue( elem, type ),
fn = queue.shift(); // If the fx queue is dequeued, always remove the progress sentinel
if ( fn === "inprogress" ) {
fn = queue.shift();
} if ( fn ) {
// Add a progress sentinel to prevent the fx queue from being
// automatically dequeued
if ( type === "fx" ) {
queue.unshift("inprogress");
} fn.call(elem, function() {
jQuery.dequeue(elem, type);
});
}
}
}); jQuery.fn.extend({
queue: function( type, data ) {
if ( typeof type !== "string" ) {
data = type;
type = "fx";
} if ( data === undefined ) {
return jQuery.queue( this[0], type );
}
return this.each(function( i ) {
var queue = jQuery.queue( this, type, data ); if ( type === "fx" && queue[0] !== "inprogress" ) {
jQuery.dequeue( this, type );
}
});
},
dequeue: function( type ) {
return this.each(function() {
jQuery.dequeue( this, type );
});
}, // Based off of the plugin by Clint Helfers, with permission.
// http://blindsignals.com/index.php/2009/07/jquery-delay/
delay: function( time, type ) {
time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;
type = type || "fx"; return this.queue( type, function() {
var elem = this;
setTimeout(function() {
jQuery.dequeue( elem, type );
}, time );
});
}, clearQueue: function( type ) {
return this.queue( type || "fx", [] );
}
}); var rclass = /[\n\t]/g,
rspaces = /\s+/,
rreturn = /\r/g,
rspecialurl = /^(?:href|src|style)$/,
rtype = /^(?:button|input)$/i,
rfocusable = /^(?:button|input|object|select|textarea)$/i,
rclickable = /^a(?:rea)?$/i,
rradiocheck = /^(?:radio|checkbox)$/i; jQuery.props = {
"for": "htmlFor",
"class": "className",
readonly: "readOnly",
maxlength: "maxLength",
cellspacing: "cellSpacing",
rowspan: "rowSpan",
colspan: "colSpan",
tabindex: "tabIndex",
usemap: "useMap",
frameborder: "frameBorder"
}; jQuery.fn.extend({
attr: function( name, value ) {
return jQuery.access( this, name, value, true, jQuery.attr );
}, removeAttr: function( name, fn ) {
return this.each(function(){
jQuery.attr( this, name, "" );
if ( this.nodeType === 1 ) {
this.removeAttribute( name );
}
});
}, addClass: function( value ) {
if ( jQuery.isFunction(value) ) {
return this.each(function(i) {
var self = jQuery(this);
self.addClass( value.call(this, i, self.attr("class")) );
});
} if ( value && typeof value === "string" ) {
var classNames = (value || "").split( rspaces ); for ( var i = 0, l = this.length; i < l; i++ ) {
var elem = this[i]; if ( elem.nodeType === 1 ) {
if ( !elem.className ) {
elem.className = value; } else {
var className = " " + elem.className + " ",
setClass = elem.className; for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
if ( className.indexOf( " " + classNames[c] + " " ) < 0 ) {
setClass += " " + classNames[c];
}
}
elem.className = jQuery.trim( setClass );
}
}
}
} return this;
}, removeClass: function( value ) {
if ( jQuery.isFunction(value) ) {
return this.each(function(i) {
var self = jQuery(this);
self.removeClass( value.call(this, i, self.attr("class")) );
});
} if ( (value && typeof value === "string") || value === undefined ) {
var classNames = (value || "").split( rspaces ); for ( var i = 0, l = this.length; i < l; i++ ) {
var elem = this[i]; if ( elem.nodeType === 1 && elem.className ) {
if ( value ) {
var className = (" " + elem.className + " ").replace(rclass, " ");
for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
className = className.replace(" " + classNames[c] + " ", " ");
}
elem.className = jQuery.trim( className ); } else {
elem.className = "";
}
}
}
} return this;
}, toggleClass: function( value, stateVal ) {
var type = typeof value,
isBool = typeof stateVal === "boolean"; if ( jQuery.isFunction( value ) ) {
return this.each(function(i) {
var self = jQuery(this);
self.toggleClass( value.call(this, i, self.attr("class"), stateVal), stateVal );
});
} return this.each(function() {
if ( type === "string" ) {
// toggle individual class names
var className,
i = 0,
self = jQuery( this ),
state = stateVal,
classNames = value.split( rspaces ); while ( (className = classNames[ i++ ]) ) {
// check each className given, space seperated list
state = isBool ? state : !self.hasClass( className );
self[ state ? "addClass" : "removeClass" ]( className );
} } else if ( type === "undefined" || type === "boolean" ) {
if ( this.className ) {
// store className if set
jQuery.data( this, "__className__", this.className );
} // toggle whole className
this.className = this.className || value === false ? "" : jQuery.data( this, "__className__" ) || "";
}
});
}, hasClass: function( selector ) {
var className = " " + selector + " ";
for ( var i = 0, l = this.length; i < l; i++ ) {
if ( (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) > -1 ) {
return true;
}
} return false;
}, val: function( value ) {
if ( !arguments.length ) {
var elem = this[0]; if ( elem ) {
if ( jQuery.nodeName( elem, "option" ) ) {
// attributes.value is undefined in Blackberry 4.7 but
// uses .value. See #6932
var val = elem.attributes.value;
return !val || val.specified ? elem.value : elem.text;
} // We need to handle select boxes special
if ( jQuery.nodeName( elem, "select" ) ) {
var index = elem.selectedIndex,
values = [],
options = elem.options,
one = elem.type === "select-one"; // Nothing was selected
if ( index < 0 ) {
return null;
} // Loop through all the selected options
for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
var option = options[ i ]; // Don't return options that are disabled or in a disabled optgroup
if ( option.selected && (jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null) &&
(!option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" )) ) { // Get the specific value for the option
value = jQuery(option).val(); // We don't need an array for one selects
if ( one ) {
return value;
} // Multi-Selects return an array
values.push( value );
}
} return values;
} // Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified
if ( rradiocheck.test( elem.type ) && !jQuery.support.checkOn ) {
return elem.getAttribute("value") === null ? "on" : elem.value;
} // Everything else, we just grab the value
return (elem.value || "").replace(rreturn, ""); } return undefined;
} var isFunction = jQuery.isFunction(value); return this.each(function(i) {
var self = jQuery(this), val = value; if ( this.nodeType !== 1 ) {
return;
} if ( isFunction ) {
val = value.call(this, i, self.val());
} // Treat null/undefined as ""; convert numbers to string
if ( val == null ) {
val = "";
} else if ( typeof val === "number" ) {
val += "";
} else if ( jQuery.isArray(val) ) {
val = jQuery.map(val, function (value) {
return value == null ? "" : value + "";
});
} if ( jQuery.isArray(val) && rradiocheck.test( this.type ) ) {
this.checked = jQuery.inArray( self.val(), val ) >= 0; } else if ( jQuery.nodeName( this, "select" ) ) {
var values = jQuery.makeArray(val); jQuery( "option", this ).each(function() {
this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0;
}); if ( !values.length ) {
this.selectedIndex = -1;
} } else {
this.value = val;
}
});
}
}); jQuery.extend({
attrFn: {
val: true,
css: true,
html: true,
text: true,
data: true,
width: true,
height: true,
offset: true
}, attr: function( elem, name, value, pass ) {
// don't set attributes on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
return undefined;
} if ( pass && name in jQuery.attrFn ) {
return jQuery(elem)[name](value);
} var notxml = elem.nodeType !== 1 || !jQuery.isXMLDoc( elem ),
// Whether we are setting (or getting)
set = value !== undefined; // Try to normalize/fix the name
name = notxml && jQuery.props[ name ] || name; // These attributes require special treatment
var special = rspecialurl.test( name ); // Safari mis-reports the default selected property of an option
// Accessing the parent's selectedIndex property fixes it
if ( name === "selected" && !jQuery.support.optSelected ) {
var parent = elem.parentNode;
if ( parent ) {
parent.selectedIndex; // Make sure that it also works with optgroups, see #5701
if ( parent.parentNode ) {
parent.parentNode.selectedIndex;
}
}
} // If applicable, access the attribute via the DOM 0 way
// 'in' checks fail in Blackberry 4.7 #6931
if ( (name in elem || elem[ name ] !== undefined) && notxml && !special ) {
if ( set ) {
// We can't allow the type property to be changed (since it causes problems in IE)
if ( name === "type" && rtype.test( elem.nodeName ) && elem.parentNode ) {
jQuery.error( "type property can't be changed" );
} if ( value === null ) {
if ( elem.nodeType === 1 ) {
elem.removeAttribute( name );
} } else {
elem[ name ] = value;
}
} // browsers index elements by id/name on forms, give priority to attributes.
if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {
return elem.getAttributeNode( name ).nodeValue;
} // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
if ( name === "tabIndex" ) {
var attributeNode = elem.getAttributeNode( "tabIndex" ); return attributeNode && attributeNode.specified ?
attributeNode.value :
rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
0 :
undefined;
} return elem[ name ];
} if ( !jQuery.support.style && notxml && name === "style" ) {
if ( set ) {
elem.style.cssText = "" + value;
} return elem.style.cssText;
} if ( set ) {
// convert the value to a string (all browsers do this but IE) see #1070
elem.setAttribute( name, "" + value );
} // Ensure that missing attributes return undefined
// Blackberry 4.7 returns "" from getAttribute #6938
if ( !elem.attributes[ name ] && (elem.hasAttribute && !elem.hasAttribute( name )) ) {
return undefined;
} var attr = !jQuery.support.hrefNormalized && notxml && special ?
// Some attributes require a special call on IE
elem.getAttribute( name, 2 ) :
elem.getAttribute( name ); // Non-existent attributes return null, we normalize to undefined
return attr === null ? undefined : attr;
}
}); var rnamespaces = /\.(.*)$/,
rformElems = /^(?:textarea|input|select)$/i,
rperiod = /\./g,
rspace = / /g,
rescape = /[^\w\s.|`]/g,
fcleanup = function( nm ) {
return nm.replace(rescape, "\\$&");
},
focusCounts = { focusin: 0, focusout: 0 }; /*
* A number of helper functions used for managing events.
* Many of the ideas behind this code originated from
* Dean Edwards' addEvent library.
*/
jQuery.event = { // Bind an event to an element
// Original by Dean Edwards
add: function( elem, types, handler, data ) {
if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
return;
} // For whatever reason, IE has trouble passing the window object
// around, causing it to be cloned in the process
if ( jQuery.isWindow( elem ) && ( elem !== window && !elem.frameElement ) ) {
elem = window;
} if ( handler === false ) {
handler = returnFalse;
} else if ( !handler ) {
// Fixes bug #7229. Fix recommended by jdalton
return;
} var handleObjIn, handleObj; if ( handler.handler ) {
handleObjIn = handler;
handler = handleObjIn.handler;
} // Make sure that the function being executed has a unique ID
if ( !handler.guid ) {
handler.guid = jQuery.guid++;
} // Init the element's event structure
var elemData = jQuery.data( elem ); // If no elemData is found then we must be trying to bind to one of the
// banned noData elements
if ( !elemData ) {
return;
} // Use a key less likely to result in collisions for plain JS objects.
// Fixes bug #7150.
var eventKey = elem.nodeType ? "events" : "__events__",
events = elemData[ eventKey ],
eventHandle = elemData.handle; if ( typeof events === "function" ) {
// On plain objects events is a fn that holds the the data
// which prevents this data from being JSON serialized
// the function does not need to be called, it just contains the data
eventHandle = events.handle;
events = events.events; } else if ( !events ) {
if ( !elem.nodeType ) {
// On plain objects, create a fn that acts as the holder
// of the values to avoid JSON serialization of event data
elemData[ eventKey ] = elemData = function(){};
} elemData.events = events = {};
} if ( !eventHandle ) {
elemData.handle = eventHandle = function() {
// Handle the second event of a trigger and when
// an event is called after a page has unloaded
return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
jQuery.event.handle.apply( eventHandle.elem, arguments ) :
undefined;
};
} // Add elem as a property of the handle function
// This is to prevent a memory leak with non-native events in IE.
eventHandle.elem = elem; // Handle multiple events separated by a space
// jQuery(...).bind("mouseover mouseout", fn);
types = types.split(" "); var type, i = 0, namespaces; while ( (type = types[ i++ ]) ) {
handleObj = handleObjIn ?
jQuery.extend({}, handleObjIn) :
{ handler: handler, data: data }; // Namespaced event handlers
if ( type.indexOf(".") > -1 ) {
namespaces = type.split(".");
type = namespaces.shift();
handleObj.namespace = namespaces.slice(0).sort().join("."); } else {
namespaces = [];
handleObj.namespace = "";
} handleObj.type = type;
if ( !handleObj.guid ) {
handleObj.guid = handler.guid;
} // Get the current list of functions bound to this event
var handlers = events[ type ],
special = jQuery.event.special[ type ] || {}; // Init the event handler queue
if ( !handlers ) {
handlers = events[ type ] = []; // Check for a special event handler
// Only use addEventListener/attachEvent if the special
// events handler returns false
if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
// Bind the global event handler to the element
if ( elem.addEventListener ) {
elem.addEventListener( type, eventHandle, false ); } else if ( elem.attachEvent ) {
elem.attachEvent( "on" + type, eventHandle );
}
}
} if ( special.add ) {
special.add.call( elem, handleObj ); if ( !handleObj.handler.guid ) {
handleObj.handler.guid = handler.guid;
}
} // Add the function to the element's handler list
handlers.push( handleObj ); // Keep track of which events have been used, for global triggering
jQuery.event.global[ type ] = true;
} // Nullify elem to prevent memory leaks in IE
elem = null;
}, global: {}, // Detach an event or set of events from an element
remove: function( elem, types, handler, pos ) {
// don't do events on text and comment nodes
if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
return;
} if ( handler === false ) {
handler = returnFalse;
} var ret, type, fn, j, i = 0, all, namespaces, namespace, special, eventType, handleObj, origType,
eventKey = elem.nodeType ? "events" : "__events__",
elemData = jQuery.data( elem ),
events = elemData && elemData[ eventKey ]; if ( !elemData || !events ) {
return;
} if ( typeof events === "function" ) {
elemData = events;
events = events.events;
} // types is actually an event object here
if ( types && types.type ) {
handler = types.handler;
types = types.type;
} // Unbind all events for the element
if ( !types || typeof types === "string" && types.charAt(0) === "." ) {
types = types || ""; for ( type in events ) {
jQuery.event.remove( elem, type + types );
} return;
} // Handle multiple events separated by a space
// jQuery(...).unbind("mouseover mouseout", fn);
types = types.split(" "); while ( (type = types[ i++ ]) ) {
origType = type;
handleObj = null;
all = type.indexOf(".") < 0;
namespaces = []; if ( !all ) {
// Namespaced event handlers
namespaces = type.split(".");
type = namespaces.shift(); namespace = new RegExp("(^|\\.)" +
jQuery.map( namespaces.slice(0).sort(), fcleanup ).join("\\.(?:.*\\.)?") + "(\\.|$)");
} eventType = events[ type ]; if ( !eventType ) {
continue;
} if ( !handler ) {
for ( j = 0; j < eventType.length; j++ ) {
handleObj = eventType[ j ]; if ( all || namespace.test( handleObj.namespace ) ) {
jQuery.event.remove( elem, origType, handleObj.handler, j );
eventType.splice( j--, 1 );
}
} continue;
} special = jQuery.event.special[ type ] || {}; for ( j = pos || 0; j < eventType.length; j++ ) {
handleObj = eventType[ j ]; if ( handler.guid === handleObj.guid ) {
// remove the given handler for the given type
if ( all || namespace.test( handleObj.namespace ) ) {
if ( pos == null ) {
eventType.splice( j--, 1 );
} if ( special.remove ) {
special.remove.call( elem, handleObj );
}
} if ( pos != null ) {
break;
}
}
} // remove generic event handler if no more handlers exist
if ( eventType.length === 0 || pos != null && eventType.length === 1 ) {
if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
jQuery.removeEvent( elem, type, elemData.handle );
} ret = null;
delete events[ type ];
}
} // Remove the expando if it's no longer used
if ( jQuery.isEmptyObject( events ) ) {
var handle = elemData.handle;
if ( handle ) {
handle.elem = null;
} delete elemData.events;
delete elemData.handle; if ( typeof elemData === "function" ) {
jQuery.removeData( elem, eventKey ); } else if ( jQuery.isEmptyObject( elemData ) ) {
jQuery.removeData( elem );
}
}
}, // bubbling is internal
trigger: function( event, data, elem /*, bubbling */ ) {
// Event object or event type
var type = event.type || event,
bubbling = arguments[3]; if ( !bubbling ) {
event = typeof event === "object" ?
// jQuery.Event object
event[ jQuery.expando ] ? event :
// Object literal
jQuery.extend( jQuery.Event(type), event ) :
// Just the event type (string)
jQuery.Event(type); if ( type.indexOf("!") >= 0 ) {
event.type = type = type.slice(0, -1);
event.exclusive = true;
} // Handle a global trigger
if ( !elem ) {
// Don't bubble custom events when global (to avoid too much overhead)
event.stopPropagation(); // Only trigger if we've ever bound an event for it
if ( jQuery.event.global[ type ] ) {
jQuery.each( jQuery.cache, function() {
if ( this.events && this.events[type] ) {
jQuery.event.trigger( event, data, this.handle.elem );
}
});
}
} // Handle triggering a single element // don't do events on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
return undefined;
} // Clean up in case it is reused
event.result = undefined;
event.target = elem; // Clone the incoming data, if any
data = jQuery.makeArray( data );
data.unshift( event );
} event.currentTarget = elem; // Trigger the event, it is assumed that "handle" is a function
var handle = elem.nodeType ?
jQuery.data( elem, "handle" ) :
(jQuery.data( elem, "__events__" ) || {}).handle; if ( handle ) {
handle.apply( elem, data );
} var parent = elem.parentNode || elem.ownerDocument; // Trigger an inline bound script
try {
if ( !(elem && elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()]) ) {
if ( elem[ "on" + type ] && elem[ "on" + type ].apply( elem, data ) === false ) {
event.result = false;
event.preventDefault();
}
} // prevent IE from throwing an error for some elements with some event types, see #3533
} catch (inlineError) {} if ( !event.isPropagationStopped() && parent ) {
jQuery.event.trigger( event, data, parent, true ); } else if ( !event.isDefaultPrevented() ) {
var old,
target = event.target,
targetType = type.replace( rnamespaces, "" ),
isClick = jQuery.nodeName( target, "a" ) && targetType === "click",
special = jQuery.event.special[ targetType ] || {}; if ( (!special._default || special._default.call( elem, event ) === false) &&
!isClick && !(target && target.nodeName && jQuery.noData[target.nodeName.toLowerCase()]) ) { try {
if ( target[ targetType ] ) {
// Make sure that we don't accidentally re-trigger the onFOO events
old = target[ "on" + targetType ]; if ( old ) {
target[ "on" + targetType ] = null;
} jQuery.event.triggered = true;
target[ targetType ]();
} // prevent IE from throwing an error for some elements with some event types, see #3533
} catch (triggerError) {} if ( old ) {
target[ "on" + targetType ] = old;
} jQuery.event.triggered = false;
}
}
}, handle: function( event ) {
var all, handlers, namespaces, namespace_re, events,
namespace_sort = [],
args = jQuery.makeArray( arguments ); event = args[0] = jQuery.event.fix( event || window.event );
event.currentTarget = this; // Namespaced event handlers
all = event.type.indexOf(".") < 0 && !event.exclusive; if ( !all ) {
namespaces = event.type.split(".");
event.type = namespaces.shift();
namespace_sort = namespaces.slice(0).sort();
namespace_re = new RegExp("(^|\\.)" + namespace_sort.join("\\.(?:.*\\.)?") + "(\\.|$)");
} event.namespace = event.namespace || namespace_sort.join("."); events = jQuery.data(this, this.nodeType ? "events" : "__events__"); if ( typeof events === "function" ) {
events = events.events;
} handlers = (events || {})[ event.type ]; if ( events && handlers ) {
// Clone the handlers to prevent manipulation
handlers = handlers.slice(0); for ( var j = 0, l = handlers.length; j < l; j++ ) {
var handleObj = handlers[ j ]; // Filter the functions by class
if ( all || namespace_re.test( handleObj.namespace ) ) {
// Pass in a reference to the handler function itself
// So that we can later remove it
event.handler = handleObj.handler;
event.data = handleObj.data;
event.handleObj = handleObj; var ret = handleObj.handler.apply( this, args ); if ( ret !== undefined ) {
event.result = ret;
if ( ret === false ) {
event.preventDefault();
event.stopPropagation();
}
} if ( event.isImmediatePropagationStopped() ) {
break;
}
}
}
} return event.result;
}, props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode layerX layerY metaKey newValue offsetX offsetY pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "), fix: function( event ) {
if ( event[ jQuery.expando ] ) {
return event;
} // store a copy of the original event object
// and "clone" to set read-only properties
var originalEvent = event;
event = jQuery.Event( originalEvent ); for ( var i = this.props.length, prop; i; ) {
prop = this.props[ --i ];
event[ prop ] = originalEvent[ prop ];
} // Fix target property, if necessary
if ( !event.target ) {
// Fixes #1925 where srcElement might not be defined either
event.target = event.srcElement || document;
} // check if target is a textnode (safari)
if ( event.target.nodeType === 3 ) {
event.target = event.target.parentNode;
} // Add relatedTarget, if necessary
if ( !event.relatedTarget && event.fromElement ) {
event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
} // Calculate pageX/Y if missing and clientX/Y available
if ( event.pageX == null && event.clientX != null ) {
var doc = document.documentElement,
body = document.body; event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
} // Add which for key events
if ( event.which == null && (event.charCode != null || event.keyCode != null) ) {
event.which = event.charCode != null ? event.charCode : event.keyCode;
} // Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
if ( !event.metaKey && event.ctrlKey ) {
event.metaKey = event.ctrlKey;
} // Add which for click: 1 === left; 2 === middle; 3 === right
// Note: button is not normalized, so don't use it
if ( !event.which && event.button !== undefined ) {
event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
} return event;
}, // Deprecated, use jQuery.guid instead
guid: 1E8, // Deprecated, use jQuery.proxy instead
proxy: jQuery.proxy, special: {
ready: {
// Make sure the ready event is setup
setup: jQuery.bindReady,
teardown: jQuery.noop
}, live: {
add: function( handleObj ) {
jQuery.event.add( this,
liveConvert( handleObj.origType, handleObj.selector ),
jQuery.extend({}, handleObj, {handler: liveHandler, guid: handleObj.handler.guid}) );
}, remove: function( handleObj ) {
jQuery.event.remove( this, liveConvert( handleObj.origType, handleObj.selector ), handleObj );
}
}, beforeunload: {
setup: function( data, namespaces, eventHandle ) {
// We only want to do this special case on windows
if ( jQuery.isWindow( this ) ) {
this.onbeforeunload = eventHandle;
}
}, teardown: function( namespaces, eventHandle ) {
if ( this.onbeforeunload === eventHandle ) {
this.onbeforeunload = null;
}
}
}
}
}; jQuery.removeEvent = document.removeEventListener ?
function( elem, type, handle ) {
if ( elem.removeEventListener ) {
elem.removeEventListener( type, handle, false );
}
} :
function( elem, type, handle ) {
if ( elem.detachEvent ) {
elem.detachEvent( "on" + type, handle );
}
}; jQuery.Event = function( src ) {
// Allow instantiation without the 'new' keyword
if ( !this.preventDefault ) {
return new jQuery.Event( src );
} // Event object
if ( src && src.type ) {
this.originalEvent = src;
this.type = src.type;
// Event type
} else {
this.type = src;
} // timeStamp is buggy for some events on Firefox(#3843)
// So we won't rely on the native value
this.timeStamp = jQuery.now(); // Mark it as fixed
this[ jQuery.expando ] = true;
}; function returnFalse() {
return false;
}
function returnTrue() {
return true;
} // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
preventDefault: function() {
this.isDefaultPrevented = returnTrue; var e = this.originalEvent;
if ( !e ) {
return;
} // if preventDefault exists run it on the original event
if ( e.preventDefault ) {
e.preventDefault(); // otherwise set the returnValue property of the original event to false (IE)
} else {
e.returnValue = false;
}
},
stopPropagation: function() {
this.isPropagationStopped = returnTrue; var e = this.originalEvent;
if ( !e ) {
return;
}
// if stopPropagation exists run it on the original event
if ( e.stopPropagation ) {
e.stopPropagation();
}
// otherwise set the cancelBubble property of the original event to true (IE)
e.cancelBubble = true;
},
stopImmediatePropagation: function() {
this.isImmediatePropagationStopped = returnTrue;
this.stopPropagation();
},
isDefaultPrevented: returnFalse,
isPropagationStopped: returnFalse,
isImmediatePropagationStopped: returnFalse
}; // Checks if an event happened on an element within another element
// Used in jQuery.event.special.mouseenter and mouseleave handlers
var withinElement = function( event ) {
// Check if mouse(over|out) are still within the same parent element
var parent = event.relatedTarget; // Firefox sometimes assigns relatedTarget a XUL element
// which we cannot access the parentNode property of
try {
// Traverse up the tree
while ( parent && parent !== this ) {
parent = parent.parentNode;
} if ( parent !== this ) {
// set the correct event type
event.type = event.data; // handle event if we actually just moused on to a non sub-element
jQuery.event.handle.apply( this, arguments );
} // assuming we've left the element since we most likely mousedover a xul element
} catch(e) { }
}, // In case of event delegation, we only need to rename the event.type,
// liveHandler will take care of the rest.
delegate = function( event ) {
event.type = event.data;
jQuery.event.handle.apply( this, arguments );
}; // Create mouseenter and mouseleave events
jQuery.each({
mouseenter: "mouseover",
mouseleave: "mouseout"
}, function( orig, fix ) {
jQuery.event.special[ orig ] = {
setup: function( data ) {
jQuery.event.add( this, fix, data && data.selector ? delegate : withinElement, orig );
},
teardown: function( data ) {
jQuery.event.remove( this, fix, data && data.selector ? delegate : withinElement );
}
};
}); // submit delegation
if ( !jQuery.support.submitBubbles ) { jQuery.event.special.submit = {
setup: function( data, namespaces ) {
if ( this.nodeName.toLowerCase() !== "form" ) {
jQuery.event.add(this, "click.specialSubmit", function( e ) {
var elem = e.target,
type = elem.type; if ( (type === "submit" || type === "image") && jQuery( elem ).closest("form").length ) {
e.liveFired = undefined;
return trigger( "submit", this, arguments );
}
}); jQuery.event.add(this, "keypress.specialSubmit", function( e ) {
var elem = e.target,
type = elem.type; if ( (type === "text" || type === "password") && jQuery( elem ).closest("form").length && e.keyCode === 13 ) {
e.liveFired = undefined;
return trigger( "submit", this, arguments );
}
}); } else {
return false;
}
}, teardown: function( namespaces ) {
jQuery.event.remove( this, ".specialSubmit" );
}
}; } // change delegation, happens here so we have bind.
if ( !jQuery.support.changeBubbles ) { var changeFilters, getVal = function( elem ) {
var type = elem.type, val = elem.value; if ( type === "radio" || type === "checkbox" ) {
val = elem.checked; } else if ( type === "select-multiple" ) {
val = elem.selectedIndex > -1 ?
jQuery.map( elem.options, function( elem ) {
return elem.selected;
}).join("-") :
""; } else if ( elem.nodeName.toLowerCase() === "select" ) {
val = elem.selectedIndex;
} return val;
}, testChange = function testChange( e ) {
var elem = e.target, data, val; if ( !rformElems.test( elem.nodeName ) || elem.readOnly ) {
return;
} data = jQuery.data( elem, "_change_data" );
val = getVal(elem); // the current data will be also retrieved by beforeactivate
if ( e.type !== "focusout" || elem.type !== "radio" ) {
jQuery.data( elem, "_change_data", val );
} if ( data === undefined || val === data ) {
return;
} if ( data != null || val ) {
e.type = "change";
e.liveFired = undefined;
return jQuery.event.trigger( e, arguments[1], elem );
}
}; jQuery.event.special.change = {
filters: {
focusout: testChange, beforedeactivate: testChange, click: function( e ) {
var elem = e.target, type = elem.type; if ( type === "radio" || type === "checkbox" || elem.nodeName.toLowerCase() === "select" ) {
return testChange.call( this, e );
}
}, // Change has to be called before submit
// Keydown will be called before keypress, which is used in submit-event delegation
keydown: function( e ) {
var elem = e.target, type = elem.type; if ( (e.keyCode === 13 && elem.nodeName.toLowerCase() !== "textarea") ||
(e.keyCode === 32 && (type === "checkbox" || type === "radio")) ||
type === "select-multiple" ) {
return testChange.call( this, e );
}
}, // Beforeactivate happens also before the previous element is blurred
// with this event you can't trigger a change event, but you can store
// information
beforeactivate: function( e ) {
var elem = e.target;
jQuery.data( elem, "_change_data", getVal(elem) );
}
}, setup: function( data, namespaces ) {
if ( this.type === "file" ) {
return false;
} for ( var type in changeFilters ) {
jQuery.event.add( this, type + ".specialChange", changeFilters[type] );
} return rformElems.test( this.nodeName );
}, teardown: function( namespaces ) {
jQuery.event.remove( this, ".specialChange" ); return rformElems.test( this.nodeName );
}
}; changeFilters = jQuery.event.special.change.filters; // Handle when the input is .focus()'d
changeFilters.focus = changeFilters.beforeactivate;
} function trigger( type, elem, args ) {
args[0].type = type;
return jQuery.event.handle.apply( elem, args );
} // Create "bubbling" focus and blur events
if ( document.addEventListener ) {
jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
jQuery.event.special[ fix ] = {
setup: function() {
if ( focusCounts[fix]++ === 0 ) {
document.addEventListener( orig, handler, true );
}
},
teardown: function() {
if ( --focusCounts[fix] === 0 ) {
document.removeEventListener( orig, handler, true );
}
}
}; function handler( e ) {
e = jQuery.event.fix( e );
e.type = fix;
return jQuery.event.trigger( e, null, e.target );
}
});
} jQuery.each(["bind", "one"], function( i, name ) {
jQuery.fn[ name ] = function( type, data, fn ) {
// Handle object literals
if ( typeof type === "object" ) {
for ( var key in type ) {
this[ name ](key, data, type[key], fn);
}
return this;
} if ( jQuery.isFunction( data ) || data === false ) {
fn = data;
data = undefined;
} var handler = name === "one" ? jQuery.proxy( fn, function( event ) {
jQuery( this ).unbind( event, handler );
return fn.apply( this, arguments );
}) : fn; if ( type === "unload" && name !== "one" ) {
this.one( type, data, fn ); } else {
for ( var i = 0, l = this.length; i < l; i++ ) {
jQuery.event.add( this[i], type, handler, data );
}
} return this;
};
}); jQuery.fn.extend({
unbind: function( type, fn ) {
// Handle object literals
if ( typeof type === "object" && !type.preventDefault ) {
for ( var key in type ) {
this.unbind(key, type[key]);
} } else {
for ( var i = 0, l = this.length; i < l; i++ ) {
jQuery.event.remove( this[i], type, fn );
}
} return this;
}, delegate: function( selector, types, data, fn ) {
return this.live( types, data, fn, selector );
}, undelegate: function( selector, types, fn ) {
if ( arguments.length === 0 ) {
return this.unbind( "live" ); } else {
return this.die( types, null, fn, selector );
}
}, trigger: function( type, data ) {
return this.each(function() {
jQuery.event.trigger( type, data, this );
});
}, triggerHandler: function( type, data ) {
if ( this[0] ) {
var event = jQuery.Event( type );
event.preventDefault();
event.stopPropagation();
jQuery.event.trigger( event, data, this[0] );
return event.result;
}
}, toggle: function( fn ) {
// Save reference to arguments for access in closure
var args = arguments,
i = 1; // link all the functions, so any of them can unbind this click handler
while ( i < args.length ) {
jQuery.proxy( fn, args[ i++ ] );
} return this.click( jQuery.proxy( fn, function( event ) {
// Figure out which function to execute
var lastToggle = ( jQuery.data( this, "lastToggle" + fn.guid ) || 0 ) % i;
jQuery.data( this, "lastToggle" + fn.guid, lastToggle + 1 ); // Make sure that clicks stop
event.preventDefault(); // and execute the function
return args[ lastToggle ].apply( this, arguments ) || false;
}));
}, hover: function( fnOver, fnOut ) {
return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
}
}); var liveMap = {
focus: "focusin",
blur: "focusout",
mouseenter: "mouseover",
mouseleave: "mouseout"
}; jQuery.each(["live", "die"], function( i, name ) {
jQuery.fn[ name ] = function( types, data, fn, origSelector /* Internal Use Only */ ) {
var type, i = 0, match, namespaces, preType,
selector = origSelector || this.selector,
context = origSelector ? this : jQuery( this.context ); if ( typeof types === "object" && !types.preventDefault ) {
for ( var key in types ) {
context[ name ]( key, data, types[key], selector );
} return this;
} if ( jQuery.isFunction( data ) ) {
fn = data;
data = undefined;
} types = (types || "").split(" "); while ( (type = types[ i++ ]) != null ) {
match = rnamespaces.exec( type );
namespaces = ""; if ( match ) {
namespaces = match[0];
type = type.replace( rnamespaces, "" );
} if ( type === "hover" ) {
types.push( "mouseenter" + namespaces, "mouseleave" + namespaces );
continue;
} preType = type; if ( type === "focus" || type === "blur" ) {
types.push( liveMap[ type ] + namespaces );
type = type + namespaces; } else {
type = (liveMap[ type ] || type) + namespaces;
} if ( name === "live" ) {
// bind live handler
for ( var j = 0, l = context.length; j < l; j++ ) {
jQuery.event.add( context[j], "live." + liveConvert( type, selector ),
{ data: data, selector: selector, handler: fn, origType: type, origHandler: fn, preType: preType } );
} } else {
// unbind live handler
context.unbind( "live." + liveConvert( type, selector ), fn );
}
} return this;
};
}); function liveHandler( event ) {
var stop, maxLevel, related, match, handleObj, elem, j, i, l, data, close, namespace, ret,
elems = [],
selectors = [],
events = jQuery.data( this, this.nodeType ? "events" : "__events__" ); if ( typeof events === "function" ) {
events = events.events;
} // Make sure we avoid non-left-click bubbling in Firefox (#3861)
if ( event.liveFired === this || !events || !events.live || event.button && event.type === "click" ) {
return;
} if ( event.namespace ) {
namespace = new RegExp("(^|\\.)" + event.namespace.split(".").join("\\.(?:.*\\.)?") + "(\\.|$)");
} event.liveFired = this; var live = events.live.slice(0); for ( j = 0; j < live.length; j++ ) {
handleObj = live[j]; if ( handleObj.origType.replace( rnamespaces, "" ) === event.type ) {
selectors.push( handleObj.selector ); } else {
live.splice( j--, 1 );
}
} match = jQuery( event.target ).closest( selectors, event.currentTarget ); for ( i = 0, l = match.length; i < l; i++ ) {
close = match[i]; for ( j = 0; j < live.length; j++ ) {
handleObj = live[j]; if ( close.selector === handleObj.selector && (!namespace || namespace.test( handleObj.namespace )) ) {
elem = close.elem;
related = null; // Those two events require additional checking
if ( handleObj.preType === "mouseenter" || handleObj.preType === "mouseleave" ) {
event.type = handleObj.preType;
related = jQuery( event.relatedTarget ).closest( handleObj.selector )[0];
} if ( !related || related !== elem ) {
elems.push({ elem: elem, handleObj: handleObj, level: close.level });
}
}
}
} for ( i = 0, l = elems.length; i < l; i++ ) {
match = elems[i]; if ( maxLevel && match.level > maxLevel ) {
break;
} event.currentTarget = match.elem;
event.data = match.handleObj.data;
event.handleObj = match.handleObj; ret = match.handleObj.origHandler.apply( match.elem, arguments ); if ( ret === false || event.isPropagationStopped() ) {
maxLevel = match.level; if ( ret === false ) {
stop = false;
}
if ( event.isImmediatePropagationStopped() ) {
break;
}
}
} return stop;
} function liveConvert( type, selector ) {
return (type && type !== "*" ? type + "." : "") + selector.replace(rperiod, "`").replace(rspace, "&");
} jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
"change select submit keydown keypress keyup error").split(" "), function( i, name ) { // Handle event binding
jQuery.fn[ name ] = function( data, fn ) {
if ( fn == null ) {
fn = data;
data = null;
} return arguments.length > 0 ?
this.bind( name, data, fn ) :
this.trigger( name );
}; if ( jQuery.attrFn ) {
jQuery.attrFn[ name ] = true;
}
}); // Prevent memory leaks in IE
// Window isn't included so as not to unbind existing unload events
// More info:
// - http://isaacschlueter.com/2006/10/msie-memory-leaks/
if ( window.attachEvent && !window.addEventListener ) {
jQuery(window).bind("unload", function() {
for ( var id in jQuery.cache ) {
if ( jQuery.cache[ id ].handle ) {
// Try/Catch is to handle iframes being unloaded, see #4280
try {
jQuery.event.remove( jQuery.cache[ id ].handle.elem );
} catch(e) {}
}
}
});
} /*!
* Sizzle CSS Selector Engine - v1.0
* Copyright 2009, The Dojo Foundation
* Released under the MIT, BSD, and GPL Licenses.
* More information: http://sizzlejs.com/
*/
(function(){ var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^\[\]]*\]|['"][^'"]*['"]|[^\[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
done = 0,
toString = Object.prototype.toString,
hasDuplicate = false,
baseHasDuplicate = true; // Here we check if the JavaScript engine is using some sort of
// optimization where it does not always call our comparision
// function. If that is the case, discard the hasDuplicate value.
// Thus far that includes Google Chrome.
[0, 0].sort(function() {
baseHasDuplicate = false;
return 0;
}); var Sizzle = function( selector, context, results, seed ) {
results = results || [];
context = context || document; var origContext = context; if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
return [];
} if ( !selector || typeof selector !== "string" ) {
return results;
} var m, set, checkSet, extra, ret, cur, pop, i,
prune = true,
contextXML = Sizzle.isXML( context ),
parts = [],
soFar = selector; // Reset the position of the chunker regexp (start from head)
do {
chunker.exec( "" );
m = chunker.exec( soFar ); if ( m ) {
soFar = m[3]; parts.push( m[1] ); if ( m[2] ) {
extra = m[3];
break;
}
}
} while ( m ); if ( parts.length > 1 && origPOS.exec( selector ) ) { if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
set = posProcess( parts[0] + parts[1], context ); } else {
set = Expr.relative[ parts[0] ] ?
[ context ] :
Sizzle( parts.shift(), context ); while ( parts.length ) {
selector = parts.shift(); if ( Expr.relative[ selector ] ) {
selector += parts.shift();
} set = posProcess( selector, set );
}
} } else {
// Take a shortcut and set the context if the root selector is an ID
// (but not if it'll be faster if the inner selector is an ID)
if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) { ret = Sizzle.find( parts.shift(), context, contextXML );
context = ret.expr ?
Sizzle.filter( ret.expr, ret.set )[0] :
ret.set[0];
} if ( context ) {
ret = seed ?
{ expr: parts.pop(), set: makeArray(seed) } :
Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML ); set = ret.expr ?
Sizzle.filter( ret.expr, ret.set ) :
ret.set; if ( parts.length > 0 ) {
checkSet = makeArray( set ); } else {
prune = false;
} while ( parts.length ) {
cur = parts.pop();
pop = cur; if ( !Expr.relative[ cur ] ) {
cur = "";
} else {
pop = parts.pop();
} if ( pop == null ) {
pop = context;
} Expr.relative[ cur ]( checkSet, pop, contextXML );
} } else {
checkSet = parts = [];
}
} if ( !checkSet ) {
checkSet = set;
} if ( !checkSet ) {
Sizzle.error( cur || selector );
} if ( toString.call(checkSet) === "[object Array]" ) {
if ( !prune ) {
results.push.apply( results, checkSet ); } else if ( context && context.nodeType === 1 ) {
for ( i = 0; checkSet[i] != null; i++ ) {
if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && Sizzle.contains(context, checkSet[i])) ) {
results.push( set[i] );
}
} } else {
for ( i = 0; checkSet[i] != null; i++ ) {
if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
results.push( set[i] );
}
}
} } else {
makeArray( checkSet, results );
} if ( extra ) {
Sizzle( extra, origContext, results, seed );
Sizzle.uniqueSort( results );
} return results;
}; Sizzle.uniqueSort = function( results ) {
if ( sortOrder ) {
hasDuplicate = baseHasDuplicate;
results.sort( sortOrder ); if ( hasDuplicate ) {
for ( var i = 1; i < results.length; i++ ) {
if ( results[i] === results[ i - 1 ] ) {
results.splice( i--, 1 );
}
}
}
} return results;
}; Sizzle.matches = function( expr, set ) {
return Sizzle( expr, null, null, set );
}; Sizzle.matchesSelector = function( node, expr ) {
return Sizzle( expr, null, null, [node] ).length > 0;
}; Sizzle.find = function( expr, context, isXML ) {
var set; if ( !expr ) {
return [];
} for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
var match,
type = Expr.order[i]; if ( (match = Expr.leftMatch[ type ].exec( expr )) ) {
var left = match[1];
match.splice( 1, 1 ); if ( left.substr( left.length - 1 ) !== "\\" ) {
match[1] = (match[1] || "").replace(/\\/g, "");
set = Expr.find[ type ]( match, context, isXML ); if ( set != null ) {
expr = expr.replace( Expr.match[ type ], "" );
break;
}
}
}
} if ( !set ) {
set = context.getElementsByTagName( "*" );
} return { set: set, expr: expr };
}; Sizzle.filter = function( expr, set, inplace, not ) {
var match, anyFound,
old = expr,
result = [],
curLoop = set,
isXMLFilter = set && set[0] && Sizzle.isXML( set[0] ); while ( expr && set.length ) {
for ( var type in Expr.filter ) {
if ( (match = Expr.leftMatch[ type ].exec( expr )) != null && match[2] ) {
var found, item,
filter = Expr.filter[ type ],
left = match[1]; anyFound = false; match.splice(1,1); if ( left.substr( left.length - 1 ) === "\\" ) {
continue;
} if ( curLoop === result ) {
result = [];
} if ( Expr.preFilter[ type ] ) {
match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter ); if ( !match ) {
anyFound = found = true; } else if ( match === true ) {
continue;
}
} if ( match ) {
for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
if ( item ) {
found = filter( item, match, i, curLoop );
var pass = not ^ !!found; if ( inplace && found != null ) {
if ( pass ) {
anyFound = true; } else {
curLoop[i] = false;
} } else if ( pass ) {
result.push( item );
anyFound = true;
}
}
}
} if ( found !== undefined ) {
if ( !inplace ) {
curLoop = result;
} expr = expr.replace( Expr.match[ type ], "" ); if ( !anyFound ) {
return [];
} break;
}
}
} // Improper expression
if ( expr === old ) {
if ( anyFound == null ) {
Sizzle.error( expr ); } else {
break;
}
} old = expr;
} return curLoop;
}; Sizzle.error = function( msg ) {
throw "Syntax error, unrecognized expression: " + msg;
}; var Expr = Sizzle.selectors = {
order: [ "ID", "NAME", "TAG" ], match: {
ID: /#((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
CLASS: /\.((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF\-]|\\.)+)['"]*\]/,
ATTR: /\[\s*((?:[\w\u00c0-\uFFFF\-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
TAG: /^((?:[\w\u00c0-\uFFFF\*\-]|\\.)+)/,
CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+\-]*)\))?/,
POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^\-]|$)/,
PSEUDO: /:((?:[\w\u00c0-\uFFFF\-]|\\.)+)(?:\((['"]?)((?:\([^\)]+\)|[^\(\)]*)+)\2\))?/
}, leftMatch: {}, attrMap: {
"class": "className",
"for": "htmlFor"
}, attrHandle: {
href: function( elem ) {
return elem.getAttribute( "href" );
}
}, relative: {
"+": function(checkSet, part){
var isPartStr = typeof part === "string",
isTag = isPartStr && !/\W/.test( part ),
isPartStrNotTag = isPartStr && !isTag; if ( isTag ) {
part = part.toLowerCase();
} for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
if ( (elem = checkSet[i]) ) {
while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {} checkSet[i] = isPartStrNotTag || elem && elem.nodeName.toLowerCase() === part ?
elem || false :
elem === part;
}
} if ( isPartStrNotTag ) {
Sizzle.filter( part, checkSet, true );
}
}, ">": function( checkSet, part ) {
var elem,
isPartStr = typeof part === "string",
i = 0,
l = checkSet.length; if ( isPartStr && !/\W/.test( part ) ) {
part = part.toLowerCase(); for ( ; i < l; i++ ) {
elem = checkSet[i]; if ( elem ) {
var parent = elem.parentNode;
checkSet[i] = parent.nodeName.toLowerCase() === part ? parent : false;
}
} } else {
for ( ; i < l; i++ ) {
elem = checkSet[i]; if ( elem ) {
checkSet[i] = isPartStr ?
elem.parentNode :
elem.parentNode === part;
}
} if ( isPartStr ) {
Sizzle.filter( part, checkSet, true );
}
}
}, "": function(checkSet, part, isXML){
var nodeCheck,
doneName = done++,
checkFn = dirCheck; if ( typeof part === "string" && !/\W/.test(part) ) {
part = part.toLowerCase();
nodeCheck = part;
checkFn = dirNodeCheck;
} checkFn( "parentNode", part, doneName, checkSet, nodeCheck, isXML );
}, "~": function( checkSet, part, isXML ) {
var nodeCheck,
doneName = done++,
checkFn = dirCheck; if ( typeof part === "string" && !/\W/.test( part ) ) {
part = part.toLowerCase();
nodeCheck = part;
checkFn = dirNodeCheck;
} checkFn( "previousSibling", part, doneName, checkSet, nodeCheck, isXML );
}
}, find: {
ID: function( match, context, isXML ) {
if ( typeof context.getElementById !== "undefined" && !isXML ) {
var m = context.getElementById(match[1]);
// Check parentNode to catch when Blackberry 4.6 returns
// nodes that are no longer in the document #6963
return m && m.parentNode ? [m] : [];
}
}, NAME: function( match, context ) {
if ( typeof context.getElementsByName !== "undefined" ) {
var ret = [],
results = context.getElementsByName( match[1] ); for ( var i = 0, l = results.length; i < l; i++ ) {
if ( results[i].getAttribute("name") === match[1] ) {
ret.push( results[i] );
}
} return ret.length === 0 ? null : ret;
}
}, TAG: function( match, context ) {
return context.getElementsByTagName( match[1] );
}
},
preFilter: {
CLASS: function( match, curLoop, inplace, result, not, isXML ) {
match = " " + match[1].replace(/\\/g, "") + " "; if ( isXML ) {
return match;
} for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
if ( elem ) {
if ( not ^ (elem.className && (" " + elem.className + " ").replace(/[\t\n]/g, " ").indexOf(match) >= 0) ) {
if ( !inplace ) {
result.push( elem );
} } else if ( inplace ) {
curLoop[i] = false;
}
}
} return false;
}, ID: function( match ) {
return match[1].replace(/\\/g, "");
}, TAG: function( match, curLoop ) {
return match[1].toLowerCase();
}, CHILD: function( match ) {
if ( match[1] === "nth" ) {
// parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" ||
!/\D/.test( match[2] ) && "0n+" + match[2] || match[2]); // calculate the numbers (first)n+(last) including if they are negative
match[2] = (test[1] + (test[2] || 1)) - 0;
match[3] = test[3] - 0;
} // TODO: Move to normal caching system
match[0] = done++; return match;
}, ATTR: function( match, curLoop, inplace, result, not, isXML ) {
var name = match[1].replace(/\\/g, ""); if ( !isXML && Expr.attrMap[name] ) {
match[1] = Expr.attrMap[name];
} if ( match[2] === "~=" ) {
match[4] = " " + match[4] + " ";
} return match;
}, PSEUDO: function( match, curLoop, inplace, result, not ) {
if ( match[1] === "not" ) {
// If we're dealing with a complex expression, or a simple one
if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) {
match[3] = Sizzle(match[3], null, null, curLoop); } else {
var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not); if ( !inplace ) {
result.push.apply( result, ret );
} return false;
} } else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
return true;
} return match;
}, POS: function( match ) {
match.unshift( true ); return match;
}
}, filters: {
enabled: function( elem ) {
return elem.disabled === false && elem.type !== "hidden";
}, disabled: function( elem ) {
return elem.disabled === true;
}, checked: function( elem ) {
return elem.checked === true;
}, selected: function( elem ) {
// Accessing this property makes selected-by-default
// options in Safari work properly
elem.parentNode.selectedIndex; return elem.selected === true;
}, parent: function( elem ) {
return !!elem.firstChild;
}, empty: function( elem ) {
return !elem.firstChild;
}, has: function( elem, i, match ) {
return !!Sizzle( match[3], elem ).length;
}, header: function( elem ) {
return (/h\d/i).test( elem.nodeName );
}, text: function( elem ) {
return "text" === elem.type;
},
radio: function( elem ) {
return "radio" === elem.type;
}, checkbox: function( elem ) {
return "checkbox" === elem.type;
}, file: function( elem ) {
return "file" === elem.type;
},
password: function( elem ) {
return "password" === elem.type;
}, submit: function( elem ) {
return "submit" === elem.type;
}, image: function( elem ) {
return "image" === elem.type;
}, reset: function( elem ) {
return "reset" === elem.type;
}, button: function( elem ) {
return "button" === elem.type || elem.nodeName.toLowerCase() === "button";
}, input: function( elem ) {
return (/input|select|textarea|button/i).test( elem.nodeName );
}
},
setFilters: {
first: function( elem, i ) {
return i === 0;
}, last: function( elem, i, match, array ) {
return i === array.length - 1;
}, even: function( elem, i ) {
return i % 2 === 0;
}, odd: function( elem, i ) {
return i % 2 === 1;
}, lt: function( elem, i, match ) {
return i < match[3] - 0;
}, gt: function( elem, i, match ) {
return i > match[3] - 0;
}, nth: function( elem, i, match ) {
return match[3] - 0 === i;
}, eq: function( elem, i, match ) {
return match[3] - 0 === i;
}
},
filter: {
PSEUDO: function( elem, match, i, array ) {
var name = match[1],
filter = Expr.filters[ name ]; if ( filter ) {
return filter( elem, i, match, array ); } else if ( name === "contains" ) {
return (elem.textContent || elem.innerText || Sizzle.getText([ elem ]) || "").indexOf(match[3]) >= 0; } else if ( name === "not" ) {
var not = match[3]; for ( var j = 0, l = not.length; j < l; j++ ) {
if ( not[j] === elem ) {
return false;
}
} return true; } else {
Sizzle.error( "Syntax error, unrecognized expression: " + name );
}
}, CHILD: function( elem, match ) {
var type = match[1],
node = elem; switch ( type ) {
case "only":
case "first":
while ( (node = node.previousSibling) ) {
if ( node.nodeType === 1 ) {
return false;
}
} if ( type === "first" ) {
return true;
} node = elem; case "last":
while ( (node = node.nextSibling) ) {
if ( node.nodeType === 1 ) {
return false;
}
} return true; case "nth":
var first = match[2],
last = match[3]; if ( first === 1 && last === 0 ) {
return true;
} var doneName = match[0],
parent = elem.parentNode; if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
var count = 0; for ( node = parent.firstChild; node; node = node.nextSibling ) {
if ( node.nodeType === 1 ) {
node.nodeIndex = ++count;
}
} parent.sizcache = doneName;
} var diff = elem.nodeIndex - last; if ( first === 0 ) {
return diff === 0; } else {
return ( diff % first === 0 && diff / first >= 0 );
}
}
}, ID: function( elem, match ) {
return elem.nodeType === 1 && elem.getAttribute("id") === match;
}, TAG: function( elem, match ) {
return (match === "*" && elem.nodeType === 1) || elem.nodeName.toLowerCase() === match;
}, CLASS: function( elem, match ) {
return (" " + (elem.className || elem.getAttribute("class")) + " ")
.indexOf( match ) > -1;
}, ATTR: function( elem, match ) {
var name = match[1],
result = Expr.attrHandle[ name ] ?
Expr.attrHandle[ name ]( elem ) :
elem[ name ] != null ?
elem[ name ] :
elem.getAttribute( name ),
value = result + "",
type = match[2],
check = match[4]; return result == null ?
type === "!=" :
type === "=" ?
value === check :
type === "*=" ?
value.indexOf(check) >= 0 :
type === "~=" ?
(" " + value + " ").indexOf(check) >= 0 :
!check ?
value && result !== false :
type === "!=" ?
value !== check :
type === "^=" ?
value.indexOf(check) === 0 :
type === "$=" ?
value.substr(value.length - check.length) === check :
type === "|=" ?
value === check || value.substr(0, check.length + 1) === check + "-" :
false;
}, POS: function( elem, match, i, array ) {
var name = match[2],
filter = Expr.setFilters[ name ]; if ( filter ) {
return filter( elem, i, match, array );
}
}
}
}; var origPOS = Expr.match.POS,
fescape = function(all, num){
return "\\" + (num - 0 + 1);
}; for ( var type in Expr.match ) {
Expr.match[ type ] = new RegExp( Expr.match[ type ].source + (/(?![^\[]*\])(?![^\(]*\))/.source) );
Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source.replace(/\\(\d+)/g, fescape) );
} var makeArray = function( array, results ) {
array = Array.prototype.slice.call( array, 0 ); if ( results ) {
results.push.apply( results, array );
return results;
} return array;
}; // Perform a simple check to determine if the browser is capable of
// converting a NodeList to an array using builtin methods.
// Also verifies that the returned array holds DOM nodes
// (which is not the case in the Blackberry browser)
try {
Array.prototype.slice.call( document.documentElement.childNodes, 0 )[0].nodeType; // Provide a fallback method if it does not work
} catch( e ) {
makeArray = function( array, results ) {
var i = 0,
ret = results || []; if ( toString.call(array) === "[object Array]" ) {
Array.prototype.push.apply( ret, array ); } else {
if ( typeof array.length === "number" ) {
for ( var l = array.length; i < l; i++ ) {
ret.push( array[i] );
} } else {
for ( ; array[i]; i++ ) {
ret.push( array[i] );
}
}
} return ret;
};
} var sortOrder, siblingCheck; if ( document.documentElement.compareDocumentPosition ) {
sortOrder = function( a, b ) {
if ( a === b ) {
hasDuplicate = true;
return 0;
} if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) {
return a.compareDocumentPosition ? -1 : 1;
} return a.compareDocumentPosition(b) & 4 ? -1 : 1;
}; } else {
sortOrder = function( a, b ) {
var al, bl,
ap = [],
bp = [],
aup = a.parentNode,
bup = b.parentNode,
cur = aup; // The nodes are identical, we can exit early
if ( a === b ) {
hasDuplicate = true;
return 0; // If the nodes are siblings (or identical) we can do a quick check
} else if ( aup === bup ) {
return siblingCheck( a, b ); // If no parents were found then the nodes are disconnected
} else if ( !aup ) {
return -1; } else if ( !bup ) {
return 1;
} // Otherwise they're somewhere else in the tree so we need
// to build up a full list of the parentNodes for comparison
while ( cur ) {
ap.unshift( cur );
cur = cur.parentNode;
} cur = bup; while ( cur ) {
bp.unshift( cur );
cur = cur.parentNode;
} al = ap.length;
bl = bp.length; // Start walking down the tree looking for a discrepancy
for ( var i = 0; i < al && i < bl; i++ ) {
if ( ap[i] !== bp[i] ) {
return siblingCheck( ap[i], bp[i] );
}
} // We ended someplace up the tree so do a sibling check
return i === al ?
siblingCheck( a, bp[i], -1 ) :
siblingCheck( ap[i], b, 1 );
}; siblingCheck = function( a, b, ret ) {
if ( a === b ) {
return ret;
} var cur = a.nextSibling; while ( cur ) {
if ( cur === b ) {
return -1;
} cur = cur.nextSibling;
} return 1;
};
} // Utility function for retreiving the text value of an array of DOM nodes
Sizzle.getText = function( elems ) {
var ret = "", elem; for ( var i = 0; elems[i]; i++ ) {
elem = elems[i]; // Get the text from text nodes and CDATA nodes
if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
ret += elem.nodeValue; // Traverse everything else, except comment nodes
} else if ( elem.nodeType !== 8 ) {
ret += Sizzle.getText( elem.childNodes );
}
} return ret;
}; // Check to see if the browser returns elements by name when
// querying by getElementById (and provide a workaround)
(function(){
// We're going to inject a fake input element with a specified name
var form = document.createElement("div"),
id = "script" + (new Date()).getTime(),
root = document.documentElement; form.innerHTML = "<a name='" + id + "'/>"; // Inject it into the root element, check its status, and remove it quickly
root.insertBefore( form, root.firstChild ); // The workaround has to do additional checks after a getElementById
// Which slows things down for other browsers (hence the branching)
if ( document.getElementById( id ) ) {
Expr.find.ID = function( match, context, isXML ) {
if ( typeof context.getElementById !== "undefined" && !isXML ) {
var m = context.getElementById(match[1]); return m ?
m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ?
[m] :
undefined :
[];
}
}; Expr.filter.ID = function( elem, match ) {
var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id"); return elem.nodeType === 1 && node && node.nodeValue === match;
};
} root.removeChild( form ); // release memory in IE
root = form = null;
})(); (function(){
// Check to see if the browser returns only elements
// when doing getElementsByTagName("*") // Create a fake element
var div = document.createElement("div");
div.appendChild( document.createComment("") ); // Make sure no comments are found
if ( div.getElementsByTagName("*").length > 0 ) {
Expr.find.TAG = function( match, context ) {
var results = context.getElementsByTagName( match[1] ); // Filter out possible comments
if ( match[1] === "*" ) {
var tmp = []; for ( var i = 0; results[i]; i++ ) {
if ( results[i].nodeType === 1 ) {
tmp.push( results[i] );
}
} results = tmp;
} return results;
};
} // Check to see if an attribute returns normalized href attributes
div.innerHTML = "<a href='#'></a>"; if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
div.firstChild.getAttribute("href") !== "#" ) { Expr.attrHandle.href = function( elem ) {
return elem.getAttribute( "href", 2 );
};
} // release memory in IE
div = null;
})(); if ( document.querySelectorAll ) {
(function(){
var oldSizzle = Sizzle,
div = document.createElement("div"),
id = "__sizzle__"; div.innerHTML = "<p class='TEST'></p>"; // Safari can't handle uppercase or unicode characters when
// in quirks mode.
if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
return;
} Sizzle = function( query, context, extra, seed ) {
context = context || document; // Make sure that attribute selectors are quoted
query = query.replace(/\=\s*([^'"\]]*)\s*\]/g, "='$1']"); // Only use querySelectorAll on non-XML documents
// (ID selectors don't work in non-HTML documents)
if ( !seed && !Sizzle.isXML(context) ) {
if ( context.nodeType === 9 ) {
try {
return makeArray( context.querySelectorAll(query), extra );
} catch(qsaError) {} // qSA works strangely on Element-rooted queries
// We can work around this by specifying an extra ID on the root
// and working up from there (Thanks to Andrew Dupont for the technique)
// IE 8 doesn't work on object elements
} else if ( context.nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
var old = context.getAttribute( "id" ),
nid = old || id; if ( !old ) {
context.setAttribute( "id", nid );
} try {
return makeArray( context.querySelectorAll( "#" + nid + " " + query ), extra ); } catch(pseudoError) {
} finally {
if ( !old ) {
context.removeAttribute( "id" );
}
}
}
} return oldSizzle(query, context, extra, seed);
}; for ( var prop in oldSizzle ) {
Sizzle[ prop ] = oldSizzle[ prop ];
} // release memory in IE
div = null;
})();
} (function(){
var html = document.documentElement,
matches = html.matchesSelector || html.mozMatchesSelector || html.webkitMatchesSelector || html.msMatchesSelector,
pseudoWorks = false; try {
// This should fail with an exception
// Gecko does not error, returns false instead
matches.call( document.documentElement, "[test!='']:sizzle" ); } catch( pseudoError ) {
pseudoWorks = true;
} if ( matches ) {
Sizzle.matchesSelector = function( node, expr ) {
// Make sure that attribute selectors are quoted
expr = expr.replace(/\=\s*([^'"\]]*)\s*\]/g, "='$1']"); if ( !Sizzle.isXML( node ) ) {
try {
if ( pseudoWorks || !Expr.match.PSEUDO.test( expr ) && !/!=/.test( expr ) ) {
return matches.call( node, expr );
}
} catch(e) {}
} return Sizzle(expr, null, null, [node]).length > 0;
};
}
})(); (function(){
var div = document.createElement("div"); div.innerHTML = "<div class='test e'></div><div class='test'></div>"; // Opera can't find a second classname (in 9.6)
// Also, make sure that getElementsByClassName actually exists
if ( !div.getElementsByClassName || div.getElementsByClassName("e").length === 0 ) {
return;
} // Safari caches class attributes, doesn't catch changes (in 3.2)
div.lastChild.className = "e"; if ( div.getElementsByClassName("e").length === 1 ) {
return;
} Expr.order.splice(1, 0, "CLASS");
Expr.find.CLASS = function( match, context, isXML ) {
if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
return context.getElementsByClassName(match[1]);
}
}; // release memory in IE
div = null;
})(); function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
for ( var i = 0, l = checkSet.length; i < l; i++ ) {
var elem = checkSet[i]; if ( elem ) {
var match = false; elem = elem[dir]; while ( elem ) {
if ( elem.sizcache === doneName ) {
match = checkSet[elem.sizset];
break;
} if ( elem.nodeType === 1 && !isXML ){
elem.sizcache = doneName;
elem.sizset = i;
} if ( elem.nodeName.toLowerCase() === cur ) {
match = elem;
break;
} elem = elem[dir];
} checkSet[i] = match;
}
}
} function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
for ( var i = 0, l = checkSet.length; i < l; i++ ) {
var elem = checkSet[i]; if ( elem ) {
var match = false; elem = elem[dir]; while ( elem ) {
if ( elem.sizcache === doneName ) {
match = checkSet[elem.sizset];
break;
} if ( elem.nodeType === 1 ) {
if ( !isXML ) {
elem.sizcache = doneName;
elem.sizset = i;
} if ( typeof cur !== "string" ) {
if ( elem === cur ) {
match = true;
break;
} } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
match = elem;
break;
}
} elem = elem[dir];
} checkSet[i] = match;
}
}
} if ( document.documentElement.contains ) {
Sizzle.contains = function( a, b ) {
return a !== b && (a.contains ? a.contains(b) : true);
}; } else if ( document.documentElement.compareDocumentPosition ) {
Sizzle.contains = function( a, b ) {
return !!(a.compareDocumentPosition(b) & 16);
}; } else {
Sizzle.contains = function() {
return false;
};
} Sizzle.isXML = function( elem ) {
// documentElement is verified for cases where it doesn't yet exist
// (such as loading iframes in IE - #4833)
var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement; return documentElement ? documentElement.nodeName !== "HTML" : false;
}; var posProcess = function( selector, context ) {
var match,
tmpSet = [],
later = "",
root = context.nodeType ? [context] : context; // Position selectors must be done after the filter
// And so must :not(positional) so we move all PSEUDOs to the end
while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
later += match[0];
selector = selector.replace( Expr.match.PSEUDO, "" );
} selector = Expr.relative[selector] ? selector + "*" : selector; for ( var i = 0, l = root.length; i < l; i++ ) {
Sizzle( selector, root[i], tmpSet );
} return Sizzle.filter( later, tmpSet );
}; // EXPOSE
jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[":"] = jQuery.expr.filters;
jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains; })(); var runtil = /Until$/,
rparentsprev = /^(?:parents|prevUntil|prevAll)/,
// Note: This RegExp should be improved, or likely pulled from Sizzle
rmultiselector = /,/,
isSimple = /^.[^:#\[\.,]*$/,
slice = Array.prototype.slice,
POS = jQuery.expr.match.POS; jQuery.fn.extend({
find: function( selector ) {
var ret = this.pushStack( "", "find", selector ),
length = 0; for ( var i = 0, l = this.length; i < l; i++ ) {
length = ret.length;
jQuery.find( selector, this[i], ret ); if ( i > 0 ) {
// Make sure that the results are unique
for ( var n = length; n < ret.length; n++ ) {
for ( var r = 0; r < length; r++ ) {
if ( ret[r] === ret[n] ) {
ret.splice(n--, 1);
break;
}
}
}
}
} return ret;
}, has: function( target ) {
var targets = jQuery( target );
return this.filter(function() {
for ( var i = 0, l = targets.length; i < l; i++ ) {
if ( jQuery.contains( this, targets[i] ) ) {
return true;
}
}
});
}, not: function( selector ) {
return this.pushStack( winnow(this, selector, false), "not", selector);
}, filter: function( selector ) {
return this.pushStack( winnow(this, selector, true), "filter", selector );
}, is: function( selector ) {
return !!selector && jQuery.filter( selector, this ).length > 0;
}, closest: function( selectors, context ) {
var ret = [], i, l, cur = this[0]; if ( jQuery.isArray( selectors ) ) {
var match, selector,
matches = {},
level = 1; if ( cur && selectors.length ) {
for ( i = 0, l = selectors.length; i < l; i++ ) {
selector = selectors[i]; if ( !matches[selector] ) {
matches[selector] = jQuery.expr.match.POS.test( selector ) ?
jQuery( selector, context || this.context ) :
selector;
}
} while ( cur && cur.ownerDocument && cur !== context ) {
for ( selector in matches ) {
match = matches[selector]; if ( match.jquery ? match.index(cur) > -1 : jQuery(cur).is(match) ) {
ret.push({ selector: selector, elem: cur, level: level });
}
} cur = cur.parentNode;
level++;
}
} return ret;
} var pos = POS.test( selectors ) ?
jQuery( selectors, context || this.context ) : null; for ( i = 0, l = this.length; i < l; i++ ) {
cur = this[i]; while ( cur ) {
if ( pos ? pos.index(cur) > -1 : jQuery.find.matchesSelector(cur, selectors) ) {
ret.push( cur );
break; } else {
cur = cur.parentNode;
if ( !cur || !cur.ownerDocument || cur === context ) {
break;
}
}
}
} ret = ret.length > 1 ? jQuery.unique(ret) : ret; return this.pushStack( ret, "closest", selectors );
}, // Determine the position of an element within
// the matched set of elements
index: function( elem ) {
if ( !elem || typeof elem === "string" ) {
return jQuery.inArray( this[0],
// If it receives a string, the selector is used
// If it receives nothing, the siblings are used
elem ? jQuery( elem ) : this.parent().children() );
}
// Locate the position of the desired element
return jQuery.inArray(
// If it receives a jQuery object, the first element is used
elem.jquery ? elem[0] : elem, this );
}, add: function( selector, context ) {
var set = typeof selector === "string" ?
jQuery( selector, context || this.context ) :
jQuery.makeArray( selector ),
all = jQuery.merge( this.get(), set ); return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ?
all :
jQuery.unique( all ) );
}, andSelf: function() {
return this.add( this.prevObject );
}
}); // A painfully simple check to see if an element is disconnected
// from a document (should be improved, where feasible).
function isDisconnected( node ) {
return !node || !node.parentNode || node.parentNode.nodeType === 11;
} jQuery.each({
parent: function( elem ) {
var parent = elem.parentNode;
return parent && parent.nodeType !== 11 ? parent : null;
},
parents: function( elem ) {
return jQuery.dir( elem, "parentNode" );
},
parentsUntil: function( elem, i, until ) {
return jQuery.dir( elem, "parentNode", until );
},
next: function( elem ) {
return jQuery.nth( elem, 2, "nextSibling" );
},
prev: function( elem ) {
return jQuery.nth( elem, 2, "previousSibling" );
},
nextAll: function( elem ) {
return jQuery.dir( elem, "nextSibling" );
},
prevAll: function( elem ) {
return jQuery.dir( elem, "previousSibling" );
},
nextUntil: function( elem, i, until ) {
return jQuery.dir( elem, "nextSibling", until );
},
prevUntil: function( elem, i, until ) {
return jQuery.dir( elem, "previousSibling", until );
},
siblings: function( elem ) {
return jQuery.sibling( elem.parentNode.firstChild, elem );
},
children: function( elem ) {
return jQuery.sibling( elem.firstChild );
},
contents: function( elem ) {
return jQuery.nodeName( elem, "iframe" ) ?
elem.contentDocument || elem.contentWindow.document :
jQuery.makeArray( elem.childNodes );
}
}, function( name, fn ) {
jQuery.fn[ name ] = function( until, selector ) {
var ret = jQuery.map( this, fn, until ); if ( !runtil.test( name ) ) {
selector = until;
} if ( selector && typeof selector === "string" ) {
ret = jQuery.filter( selector, ret );
} ret = this.length > 1 ? jQuery.unique( ret ) : ret; if ( (this.length > 1 || rmultiselector.test( selector )) && rparentsprev.test( name ) ) {
ret = ret.reverse();
} return this.pushStack( ret, name, slice.call(arguments).join(",") );
};
}); jQuery.extend({
filter: function( expr, elems, not ) {
if ( not ) {
expr = ":not(" + expr + ")";
} return elems.length === 1 ?
jQuery.find.matchesSelector(elems[0], expr) ? [ elems[0] ] : [] :
jQuery.find.matches(expr, elems);
}, dir: function( elem, dir, until ) {
var matched = [],
cur = elem[ dir ]; while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
if ( cur.nodeType === 1 ) {
matched.push( cur );
}
cur = cur[dir];
}
return matched;
}, nth: function( cur, result, dir, elem ) {
result = result || 1;
var num = 0; for ( ; cur; cur = cur[dir] ) {
if ( cur.nodeType === 1 && ++num === result ) {
break;
}
} return cur;
}, sibling: function( n, elem ) {
var r = []; for ( ; n; n = n.nextSibling ) {
if ( n.nodeType === 1 && n !== elem ) {
r.push( n );
}
} return r;
}
}); // Implement the identical functionality for filter and not
function winnow( elements, qualifier, keep ) {
if ( jQuery.isFunction( qualifier ) ) {
return jQuery.grep(elements, function( elem, i ) {
var retVal = !!qualifier.call( elem, i, elem );
return retVal === keep;
}); } else if ( qualifier.nodeType ) {
return jQuery.grep(elements, function( elem, i ) {
return (elem === qualifier) === keep;
}); } else if ( typeof qualifier === "string" ) {
var filtered = jQuery.grep(elements, function( elem ) {
return elem.nodeType === 1;
}); if ( isSimple.test( qualifier ) ) {
return jQuery.filter(qualifier, filtered, !keep);
} else {
qualifier = jQuery.filter( qualifier, filtered );
}
} return jQuery.grep(elements, function( elem, i ) {
return (jQuery.inArray( elem, qualifier ) >= 0) === keep;
});
} var rinlinejQuery = / jQuery\d+="(?:\d+|null)"/g,
rleadingWhitespace = /^\s+/,
rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig,
rtagName = /<([\w:]+)/,
rtbody = /<tbody/i,
rhtml = /<|&#?\w+;/,
rnocache = /<(?:script|object|embed|option|style)/i,
// checked="checked" or checked (html5)
rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
raction = /\=([^="'>\s]+\/)>/g,
wrapMap = {
option: [ 1, "<select multiple='multiple'>", "</select>" ],
legend: [ 1, "<fieldset>", "</fieldset>" ],
thead: [ 1, "<table>", "</table>" ],
tr: [ 2, "<table><tbody>", "</tbody></table>" ],
td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
area: [ 1, "<map>", "</map>" ],
_default: [ 0, "", "" ]
}; wrapMap.optgroup = wrapMap.option;
wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td; // IE can't serialize <link> and <script> tags normally
if ( !jQuery.support.htmlSerialize ) {
wrapMap._default = [ 1, "div<div>", "</div>" ];
} jQuery.fn.extend({
text: function( text ) {
if ( jQuery.isFunction(text) ) {
return this.each(function(i) {
var self = jQuery( this ); self.text( text.call(this, i, self.text()) );
});
} if ( typeof text !== "object" && text !== undefined ) {
return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
} return jQuery.text( this );
}, wrapAll: function( html ) {
if ( jQuery.isFunction( html ) ) {
return this.each(function(i) {
jQuery(this).wrapAll( html.call(this, i) );
});
} if ( this[0] ) {
// The elements to wrap the target around
var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true); if ( this[0].parentNode ) {
wrap.insertBefore( this[0] );
} wrap.map(function() {
var elem = this; while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
elem = elem.firstChild;
} return elem;
}).append(this);
} return this;
}, wrapInner: function( html ) {
if ( jQuery.isFunction( html ) ) {
return this.each(function(i) {
jQuery(this).wrapInner( html.call(this, i) );
});
} return this.each(function() {
var self = jQuery( this ),
contents = self.contents(); if ( contents.length ) {
contents.wrapAll( html ); } else {
self.append( html );
}
});
}, wrap: function( html ) {
return this.each(function() {
jQuery( this ).wrapAll( html );
});
}, unwrap: function() {
return this.parent().each(function() {
if ( !jQuery.nodeName( this, "body" ) ) {
jQuery( this ).replaceWith( this.childNodes );
}
}).end();
}, append: function() {
return this.domManip(arguments, true, function( elem ) {
if ( this.nodeType === 1 ) {
this.appendChild( elem );
}
});
}, prepend: function() {
return this.domManip(arguments, true, function( elem ) {
if ( this.nodeType === 1 ) {
this.insertBefore( elem, this.firstChild );
}
});
}, before: function() {
if ( this[0] && this[0].parentNode ) {
return this.domManip(arguments, false, function( elem ) {
this.parentNode.insertBefore( elem, this );
});
} else if ( arguments.length ) {
var set = jQuery(arguments[0]);
set.push.apply( set, this.toArray() );
return this.pushStack( set, "before", arguments );
}
}, after: function() {
if ( this[0] && this[0].parentNode ) {
return this.domManip(arguments, false, function( elem ) {
this.parentNode.insertBefore( elem, this.nextSibling );
});
} else if ( arguments.length ) {
var set = this.pushStack( this, "after", arguments );
set.push.apply( set, jQuery(arguments[0]).toArray() );
return set;
}
}, // keepData is for internal use only--do not document
remove: function( selector, keepData ) {
for ( var i = 0, elem; (elem = this[i]) != null; i++ ) {
if ( !selector || jQuery.filter( selector, [ elem ] ).length ) {
if ( !keepData && elem.nodeType === 1 ) {
jQuery.cleanData( elem.getElementsByTagName("*") );
jQuery.cleanData( [ elem ] );
} if ( elem.parentNode ) {
elem.parentNode.removeChild( elem );
}
}
} return this;
}, empty: function() {
for ( var i = 0, elem; (elem = this[i]) != null; i++ ) {
// Remove element nodes and prevent memory leaks
if ( elem.nodeType === 1 ) {
jQuery.cleanData( elem.getElementsByTagName("*") );
} // Remove any remaining nodes
while ( elem.firstChild ) {
elem.removeChild( elem.firstChild );
}
} return this;
}, clone: function( events ) {
// Do the clone
var ret = this.map(function() {
if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
// IE copies events bound via attachEvent when
// using cloneNode. Calling detachEvent on the
// clone will also remove the events from the orignal
// In order to get around this, we use innerHTML.
// Unfortunately, this means some modifications to
// attributes in IE that are actually only stored
// as properties will not be copied (such as the
// the name attribute on an input).
var html = this.outerHTML,
ownerDocument = this.ownerDocument; if ( !html ) {
var div = ownerDocument.createElement("div");
div.appendChild( this.cloneNode(true) );
html = div.innerHTML;
} return jQuery.clean([html.replace(rinlinejQuery, "")
// Handle the case in IE 8 where action=/test/> self-closes a tag
.replace(raction, '="$1">')
.replace(rleadingWhitespace, "")], ownerDocument)[0];
} else {
return this.cloneNode(true);
}
}); // Copy the events from the original to the clone
if ( events === true ) {
cloneCopyEvent( this, ret );
cloneCopyEvent( this.find("*"), ret.find("*") );
} // Return the cloned set
return ret;
}, html: function( value ) {
if ( value === undefined ) {
return this[0] && this[0].nodeType === 1 ?
this[0].innerHTML.replace(rinlinejQuery, "") :
null; // See if we can take a shortcut and just use innerHTML
} else if ( typeof value === "string" && !rnocache.test( value ) &&
(jQuery.support.leadingWhitespace || !rleadingWhitespace.test( value )) &&
!wrapMap[ (rtagName.exec( value ) || ["", ""])[1].toLowerCase() ] ) { value = value.replace(rxhtmlTag, "<$1></$2>"); try {
for ( var i = 0, l = this.length; i < l; i++ ) {
// Remove element nodes and prevent memory leaks
if ( this[i].nodeType === 1 ) {
jQuery.cleanData( this[i].getElementsByTagName("*") );
this[i].innerHTML = value;
}
} // If using innerHTML throws an exception, use the fallback method
} catch(e) {
this.empty().append( value );
} } else if ( jQuery.isFunction( value ) ) {
this.each(function(i){
var self = jQuery( this ); self.html( value.call(this, i, self.html()) );
}); } else {
this.empty().append( value );
} return this;
}, replaceWith: function( value ) {
if ( this[0] && this[0].parentNode ) {
// Make sure that the elements are removed from the DOM before they are inserted
// this can help fix replacing a parent with child elements
if ( jQuery.isFunction( value ) ) {
return this.each(function(i) {
var self = jQuery(this), old = self.html();
self.replaceWith( value.call( this, i, old ) );
});
} if ( typeof value !== "string" ) {
value = jQuery( value ).detach();
} return this.each(function() {
var next = this.nextSibling,
parent = this.parentNode; jQuery( this ).remove(); if ( next ) {
jQuery(next).before( value );
} else {
jQuery(parent).append( value );
}
});
} else {
return this.pushStack( jQuery(jQuery.isFunction(value) ? value() : value), "replaceWith", value );
}
}, detach: function( selector ) {
return this.remove( selector, true );
}, domManip: function( args, table, callback ) {
var results, first, fragment, parent,
value = args[0],
scripts = []; // We can't cloneNode fragments that contain checked, in WebKit
if ( !jQuery.support.checkClone && arguments.length === 3 && typeof value === "string" && rchecked.test( value ) ) {
return this.each(function() {
jQuery(this).domManip( args, table, callback, true );
});
} if ( jQuery.isFunction(value) ) {
return this.each(function(i) {
var self = jQuery(this);
args[0] = value.call(this, i, table ? self.html() : undefined);
self.domManip( args, table, callback );
});
} if ( this[0] ) {
parent = value && value.parentNode; // If we're in a fragment, just use that instead of building a new one
if ( jQuery.support.parentNode && parent && parent.nodeType === 11 && parent.childNodes.length === this.length ) {
results = { fragment: parent }; } else {
results = jQuery.buildFragment( args, this, scripts );
} fragment = results.fragment; if ( fragment.childNodes.length === 1 ) {
first = fragment = fragment.firstChild;
} else {
first = fragment.firstChild;
} if ( first ) {
table = table && jQuery.nodeName( first, "tr" ); for ( var i = 0, l = this.length; i < l; i++ ) {
callback.call(
table ?
root(this[i], first) :
this[i],
i > 0 || results.cacheable || this.length > 1 ?
fragment.cloneNode(true) :
fragment
);
}
} if ( scripts.length ) {
jQuery.each( scripts, evalScript );
}
} return this;
}
}); function root( elem, cur ) {
return jQuery.nodeName(elem, "table") ?
(elem.getElementsByTagName("tbody")[0] ||
elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
elem;
} function cloneCopyEvent(orig, ret) {
var i = 0; ret.each(function() {
if ( this.nodeName !== (orig[i] && orig[i].nodeName) ) {
return;
} var oldData = jQuery.data( orig[i++] ),
curData = jQuery.data( this, oldData ),
events = oldData && oldData.events; if ( events ) {
delete curData.handle;
curData.events = {}; for ( var type in events ) {
for ( var handler in events[ type ] ) {
jQuery.event.add( this, type, events[ type ][ handler ], events[ type ][ handler ].data );
}
}
}
});
} jQuery.buildFragment = function( args, nodes, scripts ) {
var fragment, cacheable, cacheresults,
doc = (nodes && nodes[0] ? nodes[0].ownerDocument || nodes[0] : document); // Only cache "small" (1/2 KB) strings that are associated with the main document
// Cloning options loses the selected state, so don't cache them
// IE 6 doesn't like it when you put <object> or <embed> elements in a fragment
// Also, WebKit does not clone 'checked' attributes on cloneNode, so don't cache
if ( args.length === 1 && typeof args[0] === "string" && args[0].length < 512 && doc === document &&
!rnocache.test( args[0] ) && (jQuery.support.checkClone || !rchecked.test( args[0] )) ) { cacheable = true;
cacheresults = jQuery.fragments[ args[0] ];
if ( cacheresults ) {
if ( cacheresults !== 1 ) {
fragment = cacheresults;
}
}
} if ( !fragment ) {
fragment = doc.createDocumentFragment();
jQuery.clean( args, doc, fragment, scripts );
} if ( cacheable ) {
jQuery.fragments[ args[0] ] = cacheresults ? fragment : 1;
} return { fragment: fragment, cacheable: cacheable };
}; jQuery.fragments = {}; jQuery.each({
appendTo: "append",
prependTo: "prepend",
insertBefore: "before",
insertAfter: "after",
replaceAll: "replaceWith"
}, function( name, original ) {
jQuery.fn[ name ] = function( selector ) {
var ret = [],
insert = jQuery( selector ),
parent = this.length === 1 && this[0].parentNode; if ( parent && parent.nodeType === 11 && parent.childNodes.length === 1 && insert.length === 1 ) {
insert[ original ]( this[0] );
return this; } else {
for ( var i = 0, l = insert.length; i < l; i++ ) {
var elems = (i > 0 ? this.clone(true) : this).get();
jQuery( insert[i] )[ original ]( elems );
ret = ret.concat( elems );
} return this.pushStack( ret, name, insert.selector );
}
};
}); jQuery.extend({
clean: function( elems, context, fragment, scripts ) {
context = context || document; // !context.createElement fails in IE with an error but returns typeof 'object'
if ( typeof context.createElement === "undefined" ) {
context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
} var ret = []; for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
if ( typeof elem === "number" ) {
elem += "";
} if ( !elem ) {
continue;
} // Convert html string into DOM nodes
if ( typeof elem === "string" && !rhtml.test( elem ) ) {
elem = context.createTextNode( elem ); } else if ( typeof elem === "string" ) {
// Fix "XHTML"-style tags in all browsers
elem = elem.replace(rxhtmlTag, "<$1></$2>"); // Trim whitespace, otherwise indexOf won't work as expected
var tag = (rtagName.exec( elem ) || ["", ""])[1].toLowerCase(),
wrap = wrapMap[ tag ] || wrapMap._default,
depth = wrap[0],
div = context.createElement("div"); // Go to html and back, then peel off extra wrappers
div.innerHTML = wrap[1] + elem + wrap[2]; // Move to the right depth
while ( depth-- ) {
div = div.lastChild;
} // Remove IE's autoinserted <tbody> from table fragments
if ( !jQuery.support.tbody ) { // String was a <table>, *may* have spurious <tbody>
var hasBody = rtbody.test(elem),
tbody = tag === "table" && !hasBody ?
div.firstChild && div.firstChild.childNodes : // String was a bare <thead> or <tfoot>
wrap[1] === "<table>" && !hasBody ?
div.childNodes :
[]; for ( var j = tbody.length - 1; j >= 0 ; --j ) {
if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length ) {
tbody[ j ].parentNode.removeChild( tbody[ j ] );
}
} } // IE completely kills leading whitespace when innerHTML is used
if ( !jQuery.support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
div.insertBefore( context.createTextNode( rleadingWhitespace.exec(elem)[0] ), div.firstChild );
} elem = div.childNodes;
} if ( elem.nodeType ) {
ret.push( elem );
} else {
ret = jQuery.merge( ret, elem );
}
} if ( fragment ) {
for ( i = 0; ret[i]; i++ ) {
if ( scripts && jQuery.nodeName( ret[i], "script" ) && (!ret[i].type || ret[i].type.toLowerCase() === "text/javascript") ) {
scripts.push( ret[i].parentNode ? ret[i].parentNode.removeChild( ret[i] ) : ret[i] ); } else {
if ( ret[i].nodeType === 1 ) {
ret.splice.apply( ret, [i + 1, 0].concat(jQuery.makeArray(ret[i].getElementsByTagName("script"))) );
}
fragment.appendChild( ret[i] );
}
}
} return ret;
}, cleanData: function( elems ) {
var data, id, cache = jQuery.cache,
special = jQuery.event.special,
deleteExpando = jQuery.support.deleteExpando; for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) {
continue;
} id = elem[ jQuery.expando ]; if ( id ) {
data = cache[ id ]; if ( data && data.events ) {
for ( var type in data.events ) {
if ( special[ type ] ) {
jQuery.event.remove( elem, type ); } else {
jQuery.removeEvent( elem, type, data.handle );
}
}
} if ( deleteExpando ) {
delete elem[ jQuery.expando ]; } else if ( elem.removeAttribute ) {
elem.removeAttribute( jQuery.expando );
} delete cache[ id ];
}
}
}
}); function evalScript( i, elem ) {
if ( elem.src ) {
jQuery.ajax({
url: elem.src,
async: false,
dataType: "script"
});
} else {
jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
} if ( elem.parentNode ) {
elem.parentNode.removeChild( elem );
}
} var ralpha = /alpha\([^)]*\)/i,
ropacity = /opacity=([^)]*)/,
rdashAlpha = /-([a-z])/ig,
rupper = /([A-Z])/g,
rnumpx = /^-?\d+(?:px)?$/i,
rnum = /^-?\d/, cssShow = { position: "absolute", visibility: "hidden", display: "block" },
cssWidth = [ "Left", "Right" ],
cssHeight = [ "Top", "Bottom" ],
curCSS, getComputedStyle,
currentStyle, fcamelCase = function( all, letter ) {
return letter.toUpperCase();
}; jQuery.fn.css = function( name, value ) {
// Setting 'undefined' is a no-op
if ( arguments.length === 2 && value === undefined ) {
return this;
} return jQuery.access( this, name, value, true, function( elem, name, value ) {
return value !== undefined ?
jQuery.style( elem, name, value ) :
jQuery.css( elem, name );
});
}; jQuery.extend({
// Add in style property hooks for overriding the default
// behavior of getting and setting a style property
cssHooks: {
opacity: {
get: function( elem, computed ) {
if ( computed ) {
// We should always get a number back from opacity
var ret = curCSS( elem, "opacity", "opacity" );
return ret === "" ? "1" : ret; } else {
return elem.style.opacity;
}
}
}
}, // Exclude the following css properties to add px
cssNumber: {
"zIndex": true,
"fontWeight": true,
"opacity": true,
"zoom": true,
"lineHeight": true
}, // Add in properties whose names you wish to fix before
// setting or getting the value
cssProps: {
// normalize float css property
"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
}, // Get and set the style property on a DOM Node
style: function( elem, name, value, extra ) {
// Don't set styles on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
return;
} // Make sure that we're working with the right name
var ret, origName = jQuery.camelCase( name ),
style = elem.style, hooks = jQuery.cssHooks[ origName ]; name = jQuery.cssProps[ origName ] || origName; // Check if we're setting a value
if ( value !== undefined ) {
// Make sure that NaN and null values aren't set. See: #7116
if ( typeof value === "number" && isNaN( value ) || value == null ) {
return;
} // If a number was passed in, add 'px' to the (except for certain CSS properties)
if ( typeof value === "number" && !jQuery.cssNumber[ origName ] ) {
value += "px";
} // If a hook was provided, use that value, otherwise just set the specified value
if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value )) !== undefined ) {
// Wrapped to prevent IE from throwing errors when 'invalid' values are provided
// Fixes bug #5509
try {
style[ name ] = value;
} catch(e) {}
} } else {
// If a hook was provided get the non-computed value from there
if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
return ret;
} // Otherwise just get the value from the style object
return style[ name ];
}
}, css: function( elem, name, extra ) {
// Make sure that we're working with the right name
var ret, origName = jQuery.camelCase( name ),
hooks = jQuery.cssHooks[ origName ]; name = jQuery.cssProps[ origName ] || origName; // If a hook was provided get the computed value from there
if ( hooks && "get" in hooks && (ret = hooks.get( elem, true, extra )) !== undefined ) {
return ret; // Otherwise, if a way to get the computed value exists, use that
} else if ( curCSS ) {
return curCSS( elem, name, origName );
}
}, // A method for quickly swapping in/out CSS properties to get correct calculations
swap: function( elem, options, callback ) {
var old = {}; // Remember the old values, and insert the new ones
for ( var name in options ) {
old[ name ] = elem.style[ name ];
elem.style[ name ] = options[ name ];
} callback.call( elem ); // Revert the old values
for ( name in options ) {
elem.style[ name ] = old[ name ];
}
}, camelCase: function( string ) {
return string.replace( rdashAlpha, fcamelCase );
}
}); // DEPRECATED, Use jQuery.css() instead
jQuery.curCSS = jQuery.css; jQuery.each(["height", "width"], function( i, name ) {
jQuery.cssHooks[ name ] = {
get: function( elem, computed, extra ) {
var val; if ( computed ) {
if ( elem.offsetWidth !== 0 ) {
val = getWH( elem, name, extra ); } else {
jQuery.swap( elem, cssShow, function() {
val = getWH( elem, name, extra );
});
} if ( val <= 0 ) {
val = curCSS( elem, name, name ); if ( val === "0px" && currentStyle ) {
val = currentStyle( elem, name, name );
} if ( val != null ) {
// Should return "auto" instead of 0, use 0 for
// temporary backwards-compat
return val === "" || val === "auto" ? "0px" : val;
}
} if ( val < 0 || val == null ) {
val = elem.style[ name ]; // Should return "auto" instead of 0, use 0 for
// temporary backwards-compat
return val === "" || val === "auto" ? "0px" : val;
} return typeof val === "string" ? val : val + "px";
}
}, set: function( elem, value ) {
if ( rnumpx.test( value ) ) {
// ignore negative width and height values #1599
value = parseFloat(value); if ( value >= 0 ) {
return value + "px";
} } else {
return value;
}
}
};
}); if ( !jQuery.support.opacity ) {
jQuery.cssHooks.opacity = {
get: function( elem, computed ) {
// IE uses filters for opacity
return ropacity.test((computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "") ?
(parseFloat(RegExp.$1) / 100) + "" :
computed ? "1" : "";
}, set: function( elem, value ) {
var style = elem.style; // IE has trouble with opacity if it does not have layout
// Force it by setting the zoom level
style.zoom = 1; // Set the alpha filter to set the opacity
var opacity = jQuery.isNaN(value) ?
"" :
"alpha(opacity=" + value * 100 + ")",
filter = style.filter || ""; style.filter = ralpha.test(filter) ?
filter.replace(ralpha, opacity) :
style.filter + ' ' + opacity;
}
};
} if ( document.defaultView && document.defaultView.getComputedStyle ) {
getComputedStyle = function( elem, newName, name ) {
var ret, defaultView, computedStyle; name = name.replace( rupper, "-$1" ).toLowerCase(); if ( !(defaultView = elem.ownerDocument.defaultView) ) {
return undefined;
} if ( (computedStyle = defaultView.getComputedStyle( elem, null )) ) {
ret = computedStyle.getPropertyValue( name );
if ( ret === "" && !jQuery.contains( elem.ownerDocument.documentElement, elem ) ) {
ret = jQuery.style( elem, name );
}
} return ret;
};
} if ( document.documentElement.currentStyle ) {
currentStyle = function( elem, name ) {
var left, rsLeft,
ret = elem.currentStyle && elem.currentStyle[ name ],
style = elem.style; // From the awesome hack by Dean Edwards
// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291 // If we're not dealing with a regular pixel number
// but a number that has a weird ending, we need to convert it to pixels
if ( !rnumpx.test( ret ) && rnum.test( ret ) ) {
// Remember the original values
left = style.left;
rsLeft = elem.runtimeStyle.left; // Put in the new values to get a computed value out
elem.runtimeStyle.left = elem.currentStyle.left;
style.left = name === "fontSize" ? "1em" : (ret || 0);
ret = style.pixelLeft + "px"; // Revert the changed values
style.left = left;
elem.runtimeStyle.left = rsLeft;
} return ret === "" ? "auto" : ret;
};
} curCSS = getComputedStyle || currentStyle; function getWH( elem, name, extra ) {
var which = name === "width" ? cssWidth : cssHeight,
val = name === "width" ? elem.offsetWidth : elem.offsetHeight; if ( extra === "border" ) {
return val;
} jQuery.each( which, function() {
if ( !extra ) {
val -= parseFloat(jQuery.css( elem, "padding" + this )) || 0;
} if ( extra === "margin" ) {
val += parseFloat(jQuery.css( elem, "margin" + this )) || 0; } else {
val -= parseFloat(jQuery.css( elem, "border" + this + "Width" )) || 0;
}
}); return val;
} if ( jQuery.expr && jQuery.expr.filters ) {
jQuery.expr.filters.hidden = function( elem ) {
var width = elem.offsetWidth,
height = elem.offsetHeight; return (width === 0 && height === 0) || (!jQuery.support.reliableHiddenOffsets && (elem.style.display || jQuery.css( elem, "display" )) === "none");
}; jQuery.expr.filters.visible = function( elem ) {
return !jQuery.expr.filters.hidden( elem );
};
} var jsc = jQuery.now(),
rscript = /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,
rselectTextarea = /^(?:select|textarea)/i,
rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
rnoContent = /^(?:GET|HEAD)$/,
rbracket = /\[\]$/,
jsre = /\=\?(&|$)/,
rquery = /\?/,
rts = /([?&])_=[^&]*/,
rurl = /^(\w+:)?\/\/([^\/?#]+)/,
r20 = /%20/g,
rhash = /#.*$/, // Keep a copy of the old load method
_load = jQuery.fn.load; jQuery.fn.extend({
load: function( url, params, callback ) {
if ( typeof url !== "string" && _load ) {
return _load.apply( this, arguments ); // Don't do a request if no elements are being requested
} else if ( !this.length ) {
return this;
} var off = url.indexOf(" ");
if ( off >= 0 ) {
var selector = url.slice(off, url.length);
url = url.slice(0, off);
} // Default to a GET request
var type = "GET"; // If the second parameter was provided
if ( params ) {
// If it's a function
if ( jQuery.isFunction( params ) ) {
// We assume that it's the callback
callback = params;
params = null; // Otherwise, build a param string
} else if ( typeof params === "object" ) {
params = jQuery.param( params, jQuery.ajaxSettings.traditional );
type = "POST";
}
} var self = this; // Request the remote document
jQuery.ajax({
url: url,
type: type,
dataType: "html",
data: params,
complete: function( res, status ) {
// If successful, inject the HTML into all the matched elements
if ( status === "success" || status === "notmodified" ) {
// See if a selector was specified
self.html( selector ?
// Create a dummy div to hold the results
jQuery("<div>")
// inject the contents of the document in, removing the scripts
// to avoid any 'Permission Denied' errors in IE
.append(res.responseText.replace(rscript, "")) // Locate the specified elements
.find(selector) : // If not, just inject the full result
res.responseText );
} if ( callback ) {
self.each( callback, [res.responseText, status, res] );
}
}
}); return this;
}, serialize: function() {
return jQuery.param(this.serializeArray());
}, serializeArray: function() {
return this.map(function() {
return this.elements ? jQuery.makeArray(this.elements) : this;
})
.filter(function() {
return this.name && !this.disabled &&
(this.checked || rselectTextarea.test(this.nodeName) ||
rinput.test(this.type));
})
.map(function( i, elem ) {
var val = jQuery(this).val(); return val == null ?
null :
jQuery.isArray(val) ?
jQuery.map( val, function( val, i ) {
return { name: elem.name, value: val };
}) :
{ name: elem.name, value: val };
}).get();
}
}); // Attach a bunch of functions for handling common AJAX events
jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function( i, o ) {
jQuery.fn[o] = function( f ) {
return this.bind(o, f);
};
}); jQuery.extend({
get: function( url, data, callback, type ) {
// shift arguments if data argument was omited
if ( jQuery.isFunction( data ) ) {
type = type || callback;
callback = data;
data = null;
} return jQuery.ajax({
type: "GET",
url: url,
data: data,
success: callback,
dataType: type
});
}, getScript: function( url, callback ) {
return jQuery.get(url, null, callback, "script");
}, getJSON: function( url, data, callback ) {
return jQuery.get(url, data, callback, "json");
}, post: function( url, data, callback, type ) {
// shift arguments if data argument was omited
if ( jQuery.isFunction( data ) ) {
type = type || callback;
callback = data;
data = {};
} return jQuery.ajax({
type: "POST",
url: url,
data: data,
success: callback,
dataType: type
});
}, ajaxSetup: function( settings ) {
jQuery.extend( jQuery.ajaxSettings, settings );
}, ajaxSettings: {
url: location.href,
global: true,
type: "GET",
contentType: "application/x-www-form-urlencoded",
processData: true,
async: true,
/*
timeout: 0,
data: null,
username: null,
password: null,
traditional: false,
*/
// This function can be overriden by calling jQuery.ajaxSetup
xhr: function() {
return new window.XMLHttpRequest();
},
accepts: {
xml: "application/xml, text/xml",
html: "text/html",
script: "text/javascript, application/javascript",
json: "application/json, text/javascript",
text: "text/plain",
_default: "*/*"
}
}, ajax: function( origSettings ) {
var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings),
jsonp, status, data, type = s.type.toUpperCase(), noContent = rnoContent.test(type); s.url = s.url.replace( rhash, "" ); // Use original (not extended) context object if it was provided
s.context = origSettings && origSettings.context != null ? origSettings.context : s; // convert data if not already a string
if ( s.data && s.processData && typeof s.data !== "string" ) {
s.data = jQuery.param( s.data, s.traditional );
} // Handle JSONP Parameter Callbacks
if ( s.dataType === "jsonp" ) {
if ( type === "GET" ) {
if ( !jsre.test( s.url ) ) {
s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?";
}
} else if ( !s.data || !jsre.test(s.data) ) {
s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?";
}
s.dataType = "json";
} // Build temporary JSONP function
if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) {
jsonp = s.jsonpCallback || ("jsonp" + jsc++); // Replace the =? sequence both in the query string and the data
if ( s.data ) {
s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1");
} s.url = s.url.replace(jsre, "=" + jsonp + "$1"); // We need to make sure
// that a JSONP style response is executed properly
s.dataType = "script"; // Handle JSONP-style loading
var customJsonp = window[ jsonp ]; window[ jsonp ] = function( tmp ) {
if ( jQuery.isFunction( customJsonp ) ) {
customJsonp( tmp ); } else {
// Garbage collect
window[ jsonp ] = undefined; try {
delete window[ jsonp ];
} catch( jsonpError ) {}
} data = tmp;
jQuery.handleSuccess( s, xhr, status, data );
jQuery.handleComplete( s, xhr, status, data ); if ( head ) {
head.removeChild( script );
}
};
} if ( s.dataType === "script" && s.cache === null ) {
s.cache = false;
} if ( s.cache === false && noContent ) {
var ts = jQuery.now(); // try replacing _= if it is there
var ret = s.url.replace(rts, "$1_=" + ts); // if nothing was replaced, add timestamp to the end
s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : "");
} // If data is available, append data to url for GET/HEAD requests
if ( s.data && noContent ) {
s.url += (rquery.test(s.url) ? "&" : "?") + s.data;
} // Watch for a new set of requests
if ( s.global && jQuery.active++ === 0 ) {
jQuery.event.trigger( "ajaxStart" );
} // Matches an absolute URL, and saves the domain
var parts = rurl.exec( s.url ),
remote = parts && (parts[1] && parts[1].toLowerCase() !== location.protocol || parts[2].toLowerCase() !== location.host); // If we're requesting a remote document
// and trying to load JSON or Script with a GET
if ( s.dataType === "script" && type === "GET" && remote ) {
var head = document.getElementsByTagName("head")[0] || document.documentElement;
var script = document.createElement("script");
if ( s.scriptCharset ) {
script.charset = s.scriptCharset;
}
script.src = s.url; // Handle Script loading
if ( !jsonp ) {
var done = false; // Attach handlers for all browsers
script.onload = script.onreadystatechange = function() {
if ( !done && (!this.readyState ||
this.readyState === "loaded" || this.readyState === "complete") ) {
done = true;
jQuery.handleSuccess( s, xhr, status, data );
jQuery.handleComplete( s, xhr, status, data ); // Handle memory leak in IE
script.onload = script.onreadystatechange = null;
if ( head && script.parentNode ) {
head.removeChild( script );
}
}
};
} // Use insertBefore instead of appendChild to circumvent an IE6 bug.
// This arises when a base node is used (#2709 and #4378).
head.insertBefore( script, head.firstChild ); // We handle everything using the script element injection
return undefined;
} var requestDone = false; // Create the request object
var xhr = s.xhr(); if ( !xhr ) {
return;
} // Open the socket
// Passing null username, generates a login popup on Opera (#2865)
if ( s.username ) {
xhr.open(type, s.url, s.async, s.username, s.password);
} else {
xhr.open(type, s.url, s.async);
} // Need an extra try/catch for cross domain requests in Firefox 3
try {
// Set content-type if data specified and content-body is valid for this type
if ( (s.data != null && !noContent) || (origSettings && origSettings.contentType) ) {
xhr.setRequestHeader("Content-Type", s.contentType);
} // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
if ( s.ifModified ) {
if ( jQuery.lastModified[s.url] ) {
xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]);
} if ( jQuery.etag[s.url] ) {
xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]);
}
} // Set header so the called script knows that it's an XMLHttpRequest
// Only send the header if it's not a remote XHR
if ( !remote ) {
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
} // Set the Accepts header for the server, depending on the dataType
xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
s.accepts[ s.dataType ] + ", */*; q=0.01" :
s.accepts._default );
} catch( headerError ) {} // Allow custom headers/mimetypes and early abort
if ( s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false ) {
// Handle the global AJAX counter
if ( s.global && jQuery.active-- === 1 ) {
jQuery.event.trigger( "ajaxStop" );
} // close opended socket
xhr.abort();
return false;
} if ( s.global ) {
jQuery.triggerGlobal( s, "ajaxSend", [xhr, s] );
} // Wait for a response to come back
var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) {
// The request was aborted
if ( !xhr || xhr.readyState === 0 || isTimeout === "abort" ) {
// Opera doesn't call onreadystatechange before this point
// so we simulate the call
if ( !requestDone ) {
jQuery.handleComplete( s, xhr, status, data );
} requestDone = true;
if ( xhr ) {
xhr.onreadystatechange = jQuery.noop;
} // The transfer is complete and the data is available, or the request timed out
} else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
requestDone = true;
xhr.onreadystatechange = jQuery.noop; status = isTimeout === "timeout" ?
"timeout" :
!jQuery.httpSuccess( xhr ) ?
"error" :
s.ifModified && jQuery.httpNotModified( xhr, s.url ) ?
"notmodified" :
"success"; var errMsg; if ( status === "success" ) {
// Watch for, and catch, XML document parse errors
try {
// process the data (runs the xml through httpData regardless of callback)
data = jQuery.httpData( xhr, s.dataType, s );
} catch( parserError ) {
status = "parsererror";
errMsg = parserError;
}
} // Make sure that the request was successful or notmodified
if ( status === "success" || status === "notmodified" ) {
// JSONP handles its own success callback
if ( !jsonp ) {
jQuery.handleSuccess( s, xhr, status, data );
}
} else {
jQuery.handleError( s, xhr, status, errMsg );
} // Fire the complete handlers
if ( !jsonp ) {
jQuery.handleComplete( s, xhr, status, data );
} if ( isTimeout === "timeout" ) {
xhr.abort();
} // Stop memory leaks
if ( s.async ) {
xhr = null;
}
}
}; // Override the abort handler, if we can (IE 6 doesn't allow it, but that's OK)
// Opera doesn't fire onreadystatechange at all on abort
try {
var oldAbort = xhr.abort;
xhr.abort = function() {
if ( xhr ) {
// oldAbort has no call property in IE7 so
// just do it this way, which works in all
// browsers
Function.prototype.call.call( oldAbort, xhr );
} onreadystatechange( "abort" );
};
} catch( abortError ) {} // Timeout checker
if ( s.async && s.timeout > 0 ) {
setTimeout(function() {
// Check to see if the request is still happening
if ( xhr && !requestDone ) {
onreadystatechange( "timeout" );
}
}, s.timeout);
} // Send the data
try {
xhr.send( noContent || s.data == null ? null : s.data ); } catch( sendError ) {
jQuery.handleError( s, xhr, null, sendError ); // Fire the complete handlers
jQuery.handleComplete( s, xhr, status, data );
} // firefox 1.5 doesn't fire statechange for sync requests
if ( !s.async ) {
onreadystatechange();
} // return XMLHttpRequest to allow aborting the request etc.
return xhr;
}, // Serialize an array of form elements or a set of
// key/values into a query string
param: function( a, traditional ) {
var s = [],
add = function( key, value ) {
// If value is a function, invoke it and return its value
value = jQuery.isFunction(value) ? value() : value;
s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
}; // Set traditional to true for jQuery <= 1.3.2 behavior.
if ( traditional === undefined ) {
traditional = jQuery.ajaxSettings.traditional;
} // If an array was passed in, assume that it is an array of form elements.
if ( jQuery.isArray(a) || a.jquery ) {
// Serialize the form elements
jQuery.each( a, function() {
add( this.name, this.value );
}); } else {
// If traditional, encode the "old" way (the way 1.3.2 or older
// did it), otherwise encode params recursively.
for ( var prefix in a ) {
buildParams( prefix, a[prefix], traditional, add );
}
} // Return the resulting serialization
return s.join("&").replace(r20, "+");
}
}); function buildParams( prefix, obj, traditional, add ) {
if ( jQuery.isArray(obj) && obj.length ) {
// Serialize array item.
jQuery.each( obj, function( i, v ) {
if ( traditional || rbracket.test( prefix ) ) {
// Treat each array item as a scalar.
add( prefix, v ); } else {
// If array item is non-scalar (array or object), encode its
// numeric index to resolve deserialization ambiguity issues.
// Note that rack (as of 1.0.0) can't currently deserialize
// nested arrays properly, and attempting to do so may cause
// a server error. Possible fixes are to modify rack's
// deserialization algorithm or to provide an option or flag
// to force array serialization to be shallow.
buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v, traditional, add );
}
}); } else if ( !traditional && obj != null && typeof obj === "object" ) {
if ( jQuery.isEmptyObject( obj ) ) {
add( prefix, "" ); // Serialize object item.
} else {
jQuery.each( obj, function( k, v ) {
buildParams( prefix + "[" + k + "]", v, traditional, add );
});
} } else {
// Serialize scalar item.
add( prefix, obj );
}
} // This is still on the jQuery object... for now
// Want to move this to jQuery.ajax some day
jQuery.extend({ // Counter for holding the number of active queries
active: 0, // Last-Modified header cache for next request
lastModified: {},
etag: {}, handleError: function( s, xhr, status, e ) {
// If a local callback was specified, fire it
if ( s.error ) {
s.error.call( s.context, xhr, status, e );
} // Fire the global callback
if ( s.global ) {
jQuery.triggerGlobal( s, "ajaxError", [xhr, s, e] );
}
}, handleSuccess: function( s, xhr, status, data ) {
// If a local callback was specified, fire it and pass it the data
if ( s.success ) {
s.success.call( s.context, data, status, xhr );
} // Fire the global callback
if ( s.global ) {
jQuery.triggerGlobal( s, "ajaxSuccess", [xhr, s] );
}
}, handleComplete: function( s, xhr, status ) {
// Process result
if ( s.complete ) {
s.complete.call( s.context, xhr, status );
} // The request was completed
if ( s.global ) {
jQuery.triggerGlobal( s, "ajaxComplete", [xhr, s] );
} // Handle the global AJAX counter
if ( s.global && jQuery.active-- === 1 ) {
jQuery.event.trigger( "ajaxStop" );
}
}, triggerGlobal: function( s, type, args ) {
(s.context && s.context.url == null ? jQuery(s.context) : jQuery.event).trigger(type, args);
}, // Determines if an XMLHttpRequest was successful or not
httpSuccess: function( xhr ) {
try {
// IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
return !xhr.status && location.protocol === "file:" ||
xhr.status >= 200 && xhr.status < 300 ||
xhr.status === 304 || xhr.status === 1223;
} catch(e) {} return false;
}, // Determines if an XMLHttpRequest returns NotModified
httpNotModified: function( xhr, url ) {
var lastModified = xhr.getResponseHeader("Last-Modified"),
etag = xhr.getResponseHeader("Etag"); if ( lastModified ) {
jQuery.lastModified[url] = lastModified;
} if ( etag ) {
jQuery.etag[url] = etag;
} return xhr.status === 304;
}, httpData: function( xhr, type, s ) {
var ct = xhr.getResponseHeader("content-type") || "",
xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
data = xml ? xhr.responseXML : xhr.responseText; if ( xml && data.documentElement.nodeName === "parsererror" ) {
jQuery.error( "parsererror" );
} // Allow a pre-filtering function to sanitize the response
// s is checked to keep backwards compatibility
if ( s && s.dataFilter ) {
data = s.dataFilter( data, type );
} // The filter can actually parse the response
if ( typeof data === "string" ) {
// Get the JavaScript object, if JSON is used.
if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
data = jQuery.parseJSON( data ); // If the type is "script", eval it in global context
} else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
jQuery.globalEval( data );
}
} return data;
} }); /*
* Create the request object; Microsoft failed to properly
* implement the XMLHttpRequest in IE7 (can't request local files),
* so we use the ActiveXObject when it is available
* Additionally XMLHttpRequest can be disabled in IE7/IE8 so
* we need a fallback.
*/
if ( window.ActiveXObject ) {
jQuery.ajaxSettings.xhr = function() {
if ( window.location.protocol !== "file:" ) {
try {
return new window.XMLHttpRequest();
} catch(xhrError) {}
} try {
return new window.ActiveXObject("Microsoft.XMLHTTP");
} catch(activeError) {}
};
} // Does this browser support XHR requests?
jQuery.support.ajax = !!jQuery.ajaxSettings.xhr(); var elemdisplay = {},
rfxtypes = /^(?:toggle|show|hide)$/,
rfxnum = /^([+\-]=)?([\d+.\-]+)(.*)$/,
timerId,
fxAttrs = [
// height animations
[ "height", "marginTop", "marginBottom", "paddingTop", "paddingBottom" ],
// width animations
[ "width", "marginLeft", "marginRight", "paddingLeft", "paddingRight" ],
// opacity animations
[ "opacity" ]
]; jQuery.fn.extend({
show: function( speed, easing, callback ) {
var elem, display; if ( speed || speed === 0 ) {
return this.animate( genFx("show", 3), speed, easing, callback); } else {
for ( var i = 0, j = this.length; i < j; i++ ) {
elem = this[i];
display = elem.style.display; // Reset the inline display of this element to learn if it is
// being hidden by cascaded rules or not
if ( !jQuery.data(elem, "olddisplay") && display === "none" ) {
display = elem.style.display = "";
} // Set elements which have been overridden with display: none
// in a stylesheet to whatever the default browser style is
// for such an element
if ( display === "" && jQuery.css( elem, "display" ) === "none" ) {
jQuery.data(elem, "olddisplay", defaultDisplay(elem.nodeName));
}
} // Set the display of most of the elements in a second loop
// to avoid the constant reflow
for ( i = 0; i < j; i++ ) {
elem = this[i];
display = elem.style.display; if ( display === "" || display === "none" ) {
elem.style.display = jQuery.data(elem, "olddisplay") || "";
}
} return this;
}
}, hide: function( speed, easing, callback ) {
if ( speed || speed === 0 ) {
return this.animate( genFx("hide", 3), speed, easing, callback); } else {
for ( var i = 0, j = this.length; i < j; i++ ) {
var display = jQuery.css( this[i], "display" ); if ( display !== "none" ) {
jQuery.data( this[i], "olddisplay", display );
}
} // Set the display of the elements in a second loop
// to avoid the constant reflow
for ( i = 0; i < j; i++ ) {
this[i].style.display = "none";
} return this;
}
}, // Save the old toggle function
_toggle: jQuery.fn.toggle, toggle: function( fn, fn2, callback ) {
var bool = typeof fn === "boolean"; if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) {
this._toggle.apply( this, arguments ); } else if ( fn == null || bool ) {
this.each(function() {
var state = bool ? fn : jQuery(this).is(":hidden");
jQuery(this)[ state ? "show" : "hide" ]();
}); } else {
this.animate(genFx("toggle", 3), fn, fn2, callback);
} return this;
}, fadeTo: function( speed, to, easing, callback ) {
return this.filter(":hidden").css("opacity", 0).show().end()
.animate({opacity: to}, speed, easing, callback);
}, animate: function( prop, speed, easing, callback ) {
var optall = jQuery.speed(speed, easing, callback); if ( jQuery.isEmptyObject( prop ) ) {
return this.each( optall.complete );
} return this[ optall.queue === false ? "each" : "queue" ](function() {
// XXX 'this' does not always have a nodeName when running the
// test suite var opt = jQuery.extend({}, optall), p,
isElement = this.nodeType === 1,
hidden = isElement && jQuery(this).is(":hidden"),
self = this; for ( p in prop ) {
var name = jQuery.camelCase( p ); if ( p !== name ) {
prop[ name ] = prop[ p ];
delete prop[ p ];
p = name;
} if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
return opt.complete.call(this);
} if ( isElement && ( p === "height" || p === "width" ) ) {
// Make sure that nothing sneaks out
// Record all 3 overflow attributes because IE does not
// change the overflow attribute when overflowX and
// overflowY are set to the same value
opt.overflow = [ this.style.overflow, this.style.overflowX, this.style.overflowY ]; // Set display property to inline-block for height/width
// animations on inline elements that are having width/height
// animated
if ( jQuery.css( this, "display" ) === "inline" &&
jQuery.css( this, "float" ) === "none" ) {
if ( !jQuery.support.inlineBlockNeedsLayout ) {
this.style.display = "inline-block"; } else {
var display = defaultDisplay(this.nodeName); // inline-level elements accept inline-block;
// block-level elements need to be inline with layout
if ( display === "inline" ) {
this.style.display = "inline-block"; } else {
this.style.display = "inline";
this.style.zoom = 1;
}
}
}
} if ( jQuery.isArray( prop[p] ) ) {
// Create (if needed) and add to specialEasing
(opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
prop[p] = prop[p][0];
}
} if ( opt.overflow != null ) {
this.style.overflow = "hidden";
} opt.curAnim = jQuery.extend({}, prop); jQuery.each( prop, function( name, val ) {
var e = new jQuery.fx( self, opt, name ); if ( rfxtypes.test(val) ) {
e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop ); } else {
var parts = rfxnum.exec(val),
start = e.cur() || 0; if ( parts ) {
var end = parseFloat( parts[2] ),
unit = parts[3] || "px"; // We need to compute starting value
if ( unit !== "px" ) {
jQuery.style( self, name, (end || 1) + unit);
start = ((end || 1) / e.cur()) * start;
jQuery.style( self, name, start + unit);
} // If a +=/-= token was provided, we're doing a relative animation
if ( parts[1] ) {
end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
} e.custom( start, end, unit ); } else {
e.custom( start, val, "" );
}
}
}); // For JS strict compliance
return true;
});
}, stop: function( clearQueue, gotoEnd ) {
var timers = jQuery.timers; if ( clearQueue ) {
this.queue([]);
} this.each(function() {
// go in reverse order so anything added to the queue during the loop is ignored
for ( var i = timers.length - 1; i >= 0; i-- ) {
if ( timers[i].elem === this ) {
if (gotoEnd) {
// force the next step to be the last
timers[i](true);
} timers.splice(i, 1);
}
}
}); // start the next in the queue if the last step wasn't forced
if ( !gotoEnd ) {
this.dequeue();
} return this;
} }); function genFx( type, num ) {
var obj = {}; jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
obj[ this ] = type;
}); return obj;
} // Generate shortcuts for custom animations
jQuery.each({
slideDown: genFx("show", 1),
slideUp: genFx("hide", 1),
slideToggle: genFx("toggle", 1),
fadeIn: { opacity: "show" },
fadeOut: { opacity: "hide" },
fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
jQuery.fn[ name ] = function( speed, easing, callback ) {
return this.animate( props, speed, easing, callback );
};
}); jQuery.extend({
speed: function( speed, easing, fn ) {
var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
complete: fn || !fn && easing ||
jQuery.isFunction( speed ) && speed,
duration: speed,
easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
}; opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default; // Queueing
opt.old = opt.complete;
opt.complete = function() {
if ( opt.queue !== false ) {
jQuery(this).dequeue();
}
if ( jQuery.isFunction( opt.old ) ) {
opt.old.call( this );
}
}; return opt;
}, easing: {
linear: function( p, n, firstNum, diff ) {
return firstNum + diff * p;
},
swing: function( p, n, firstNum, diff ) {
return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
}
}, timers: [], fx: function( elem, options, prop ) {
this.options = options;
this.elem = elem;
this.prop = prop; if ( !options.orig ) {
options.orig = {};
}
} }); jQuery.fx.prototype = {
// Simple function for setting a style value
update: function() {
if ( this.options.step ) {
this.options.step.call( this.elem, this.now, this );
} (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
}, // Get the current size
cur: function() {
if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
return this.elem[ this.prop ];
} var r = parseFloat( jQuery.css( this.elem, this.prop ) );
return r && r > -10000 ? r : 0;
}, // Start an animation from one number to another
custom: function( from, to, unit ) {
var self = this,
fx = jQuery.fx; this.startTime = jQuery.now();
this.start = from;
this.end = to;
this.unit = unit || this.unit || "px";
this.now = this.start;
this.pos = this.state = 0; function t( gotoEnd ) {
return self.step(gotoEnd);
} t.elem = this.elem; if ( t() && jQuery.timers.push(t) && !timerId ) {
timerId = setInterval(fx.tick, fx.interval);
}
}, // Simple 'show' function
show: function() {
// Remember where we started, so that we can go back to it later
this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
this.options.show = true; // Begin the animation
// Make sure that we start at a small width/height to avoid any
// flash of content
this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur()); // Start by showing the element
jQuery( this.elem ).show();
}, // Simple 'hide' function
hide: function() {
// Remember where we started, so that we can go back to it later
this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
this.options.hide = true; // Begin the animation
this.custom(this.cur(), 0);
}, // Each step of an animation
step: function( gotoEnd ) {
var t = jQuery.now(), done = true; if ( gotoEnd || t >= this.options.duration + this.startTime ) {
this.now = this.end;
this.pos = this.state = 1;
this.update(); this.options.curAnim[ this.prop ] = true; for ( var i in this.options.curAnim ) {
if ( this.options.curAnim[i] !== true ) {
done = false;
}
} if ( done ) {
// Reset the overflow
if ( this.options.overflow != null && !jQuery.support.shrinkWrapBlocks ) {
var elem = this.elem,
options = this.options; jQuery.each( [ "", "X", "Y" ], function (index, value) {
elem.style[ "overflow" + value ] = options.overflow[index];
} );
} // Hide the element if the "hide" operation was done
if ( this.options.hide ) {
jQuery(this.elem).hide();
} // Reset the properties, if the item has been hidden or shown
if ( this.options.hide || this.options.show ) {
for ( var p in this.options.curAnim ) {
jQuery.style( this.elem, p, this.options.orig[p] );
}
} // Execute the complete function
this.options.complete.call( this.elem );
} return false; } else {
var n = t - this.startTime;
this.state = n / this.options.duration; // Perform the easing function, defaults to swing
var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
this.now = this.start + ((this.end - this.start) * this.pos); // Perform the next step of the animation
this.update();
} return true;
}
}; jQuery.extend( jQuery.fx, {
tick: function() {
var timers = jQuery.timers; for ( var i = 0; i < timers.length; i++ ) {
if ( !timers[i]() ) {
timers.splice(i--, 1);
}
} if ( !timers.length ) {
jQuery.fx.stop();
}
}, interval: 13, stop: function() {
clearInterval( timerId );
timerId = null;
}, speeds: {
slow: 600,
fast: 200,
// Default speed
_default: 400
}, step: {
opacity: function( fx ) {
jQuery.style( fx.elem, "opacity", fx.now );
}, _default: function( fx ) {
if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
} else {
fx.elem[ fx.prop ] = fx.now;
}
}
}
}); if ( jQuery.expr && jQuery.expr.filters ) {
jQuery.expr.filters.animated = function( elem ) {
return jQuery.grep(jQuery.timers, function( fn ) {
return elem === fn.elem;
}).length;
};
} function defaultDisplay( nodeName ) {
if ( !elemdisplay[ nodeName ] ) {
var elem = jQuery("<" + nodeName + ">").appendTo("body"),
display = elem.css("display"); elem.remove(); if ( display === "none" || display === "" ) {
display = "block";
} elemdisplay[ nodeName ] = display;
} return elemdisplay[ nodeName ];
} var rtable = /^t(?:able|d|h)$/i,
rroot = /^(?:body|html)$/i; if ( "getBoundingClientRect" in document.documentElement ) {
jQuery.fn.offset = function( options ) {
var elem = this[0], box; if ( options ) {
return this.each(function( i ) {
jQuery.offset.setOffset( this, options, i );
});
} if ( !elem || !elem.ownerDocument ) {
return null;
} if ( elem === elem.ownerDocument.body ) {
return jQuery.offset.bodyOffset( elem );
} try {
box = elem.getBoundingClientRect();
} catch(e) {} var doc = elem.ownerDocument,
docElem = doc.documentElement; // Make sure we're not dealing with a disconnected DOM node
if ( !box || !jQuery.contains( docElem, elem ) ) {
return box || { top: 0, left: 0 };
} var body = doc.body,
win = getWindow(doc),
clientTop = docElem.clientTop || body.clientTop || 0,
clientLeft = docElem.clientLeft || body.clientLeft || 0,
scrollTop = (win.pageYOffset || jQuery.support.boxModel && docElem.scrollTop || body.scrollTop ),
scrollLeft = (win.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft),
top = box.top + scrollTop - clientTop,
left = box.left + scrollLeft - clientLeft; return { top: top, left: left };
}; } else {
jQuery.fn.offset = function( options ) {
var elem = this[0]; if ( options ) {
return this.each(function( i ) {
jQuery.offset.setOffset( this, options, i );
});
} if ( !elem || !elem.ownerDocument ) {
return null;
} if ( elem === elem.ownerDocument.body ) {
return jQuery.offset.bodyOffset( elem );
} jQuery.offset.initialize(); var computedStyle,
offsetParent = elem.offsetParent,
prevOffsetParent = elem,
doc = elem.ownerDocument,
docElem = doc.documentElement,
body = doc.body,
defaultView = doc.defaultView,
prevComputedStyle = defaultView ? defaultView.getComputedStyle( elem, null ) : elem.currentStyle,
top = elem.offsetTop,
left = elem.offsetLeft; while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) {
if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
break;
} computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle;
top -= elem.scrollTop;
left -= elem.scrollLeft; if ( elem === offsetParent ) {
top += elem.offsetTop;
left += elem.offsetLeft; if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && rtable.test(elem.nodeName)) ) {
top += parseFloat( computedStyle.borderTopWidth ) || 0;
left += parseFloat( computedStyle.borderLeftWidth ) || 0;
} prevOffsetParent = offsetParent;
offsetParent = elem.offsetParent;
} if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
top += parseFloat( computedStyle.borderTopWidth ) || 0;
left += parseFloat( computedStyle.borderLeftWidth ) || 0;
} prevComputedStyle = computedStyle;
} if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) {
top += body.offsetTop;
left += body.offsetLeft;
} if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
top += Math.max( docElem.scrollTop, body.scrollTop );
left += Math.max( docElem.scrollLeft, body.scrollLeft );
} return { top: top, left: left };
};
} jQuery.offset = {
initialize: function() {
var body = document.body, container = document.createElement("div"), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.css(body, "marginTop") ) || 0,
html = "<div style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;'><div></div></div><table style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;' cellpadding='0' cellspacing='0'><tr><td></td></tr></table>"; jQuery.extend( container.style, { position: "absolute", top: 0, left: 0, margin: 0, border: 0, width: "1px", height: "1px", visibility: "hidden" } ); container.innerHTML = html;
body.insertBefore( container, body.firstChild );
innerDiv = container.firstChild;
checkDiv = innerDiv.firstChild;
td = innerDiv.nextSibling.firstChild.firstChild; this.doesNotAddBorder = (checkDiv.offsetTop !== 5);
this.doesAddBorderForTableAndCells = (td.offsetTop === 5); checkDiv.style.position = "fixed";
checkDiv.style.top = "20px"; // safari subtracts parent border width here which is 5px
this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15);
checkDiv.style.position = checkDiv.style.top = ""; innerDiv.style.overflow = "hidden";
innerDiv.style.position = "relative"; this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5); this.doesNotIncludeMarginInBodyOffset = (body.offsetTop !== bodyMarginTop); body.removeChild( container );
body = container = innerDiv = checkDiv = table = td = null;
jQuery.offset.initialize = jQuery.noop;
}, bodyOffset: function( body ) {
var top = body.offsetTop,
left = body.offsetLeft; jQuery.offset.initialize(); if ( jQuery.offset.doesNotIncludeMarginInBodyOffset ) {
top += parseFloat( jQuery.css(body, "marginTop") ) || 0;
left += parseFloat( jQuery.css(body, "marginLeft") ) || 0;
} return { top: top, left: left };
}, setOffset: function( elem, options, i ) {
var position = jQuery.css( elem, "position" ); // set position first, in-case top/left are set even on static elem
if ( position === "static" ) {
elem.style.position = "relative";
} var curElem = jQuery( elem ),
curOffset = curElem.offset(),
curCSSTop = jQuery.css( elem, "top" ),
curCSSLeft = jQuery.css( elem, "left" ),
calculatePosition = (position === "absolute" && jQuery.inArray('auto', [curCSSTop, curCSSLeft]) > -1),
props = {}, curPosition = {}, curTop, curLeft; // need to be able to calculate position if either top or left is auto and position is absolute
if ( calculatePosition ) {
curPosition = curElem.position();
} curTop = calculatePosition ? curPosition.top : parseInt( curCSSTop, 10 ) || 0;
curLeft = calculatePosition ? curPosition.left : parseInt( curCSSLeft, 10 ) || 0; if ( jQuery.isFunction( options ) ) {
options = options.call( elem, i, curOffset );
} if (options.top != null) {
props.top = (options.top - curOffset.top) + curTop;
}
if (options.left != null) {
props.left = (options.left - curOffset.left) + curLeft;
} if ( "using" in options ) {
options.using.call( elem, props );
} else {
curElem.css( props );
}
}
}; jQuery.fn.extend({
position: function() {
if ( !this[0] ) {
return null;
} var elem = this[0], // Get *real* offsetParent
offsetParent = this.offsetParent(), // Get correct offsets
offset = this.offset(),
parentOffset = rroot.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset(); // Subtract element margins
// note: when an element has margin: auto the offsetLeft and marginLeft
// are the same in Safari causing offset.left to incorrectly be 0
offset.top -= parseFloat( jQuery.css(elem, "marginTop") ) || 0;
offset.left -= parseFloat( jQuery.css(elem, "marginLeft") ) || 0; // Add offsetParent borders
parentOffset.top += parseFloat( jQuery.css(offsetParent[0], "borderTopWidth") ) || 0;
parentOffset.left += parseFloat( jQuery.css(offsetParent[0], "borderLeftWidth") ) || 0; // Subtract the two offsets
return {
top: offset.top - parentOffset.top,
left: offset.left - parentOffset.left
};
}, offsetParent: function() {
return this.map(function() {
var offsetParent = this.offsetParent || document.body;
while ( offsetParent && (!rroot.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) {
offsetParent = offsetParent.offsetParent;
}
return offsetParent;
});
}
}); // Create scrollLeft and scrollTop methods
jQuery.each( ["Left", "Top"], function( i, name ) {
var method = "scroll" + name; jQuery.fn[ method ] = function(val) {
var elem = this[0], win; if ( !elem ) {
return null;
} if ( val !== undefined ) {
// Set the scroll offset
return this.each(function() {
win = getWindow( this ); if ( win ) {
win.scrollTo(
!i ? val : jQuery(win).scrollLeft(),
i ? val : jQuery(win).scrollTop()
); } else {
this[ method ] = val;
}
});
} else {
win = getWindow( elem ); // Return the scroll offset
return win ? ("pageXOffset" in win) ? win[ i ? "pageYOffset" : "pageXOffset" ] :
jQuery.support.boxModel && win.document.documentElement[ method ] ||
win.document.body[ method ] :
elem[ method ];
}
};
}); function getWindow( elem ) {
return jQuery.isWindow( elem ) ?
elem :
elem.nodeType === 9 ?
elem.defaultView || elem.parentWindow :
false;
} // Create innerHeight, innerWidth, outerHeight and outerWidth methods
jQuery.each([ "Height", "Width" ], function( i, name ) { var type = name.toLowerCase(); // innerHeight and innerWidth
jQuery.fn["inner" + name] = function() {
return this[0] ?
parseFloat( jQuery.css( this[0], type, "padding" ) ) :
null;
}; // outerHeight and outerWidth
jQuery.fn["outer" + name] = function( margin ) {
return this[0] ?
parseFloat( jQuery.css( this[0], type, margin ? "margin" : "border" ) ) :
null;
}; jQuery.fn[ type ] = function( size ) {
// Get window width or height
var elem = this[0];
if ( !elem ) {
return size == null ? null : this;
} if ( jQuery.isFunction( size ) ) {
return this.each(function( i ) {
var self = jQuery( this );
self[ type ]( size.call( this, i, self[ type ]() ) );
});
} if ( jQuery.isWindow( elem ) ) {
// Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
return elem.document.compatMode === "CSS1Compat" && elem.document.documentElement[ "client" + name ] ||
elem.document.body[ "client" + name ]; // Get document width or height
} else if ( elem.nodeType === 9 ) {
// Either scroll[Width/Height] or offset[Width/Height], whichever is greater
return Math.max(
elem.documentElement["client" + name],
elem.body["scroll" + name], elem.documentElement["scroll" + name],
elem.body["offset" + name], elem.documentElement["offset" + name]
); // Get or set width or height on the element
} else if ( size === undefined ) {
var orig = jQuery.css( elem, type ),
ret = parseFloat( orig ); return jQuery.isNaN( ret ) ? orig : ret; // Set the width or height on the element (default to pixels if value is unitless)
} else {
return this.css( type, typeof size === "string" ? size : size + "px" );
}
}; }); })(window);
jQuery 1.4.4
这个立即执行函数是比较庞大，所以我选取的是1.4.4这样一个比较老的版本，但也足以用来进行说明。
1.整个jQuery占用全局作用域两个变量，一个是jQuery，另一个是$。而且占用两个还是为了方便我们书写。其实两个变量是完全相同的，在第908行，我们可以看到。
// Expose jQuery to the global object
return (window.jQuery = window.$ = jQuery);
jQuery内部封装的变量，我们可以直接通过$来访问。这样，避免了声明不必要的全局变量。
这里的jQuery可谓起到了一个命名空间的作用。
试想，如果我们引用了另一个js插件superQuery，它占用了一个全局变量，声明window.superQuery=superQuery;
那即便superQuery内部声明了和jQuery同名变量，它们命名空间不同，实际上，并不会造成冲突。
2.我们再来看913-1105行。
(function(){
jQuery.support = {};
//……
})();
内部主要为创建了jQuery.support。这个创建工作只需要执行一次，所以也使用了立即执行函数。
而巧妙的是，再通过为support添加一系列的内容，就轻松将其暴露在我们可访问的范围之类了。同时，并未造成全局作用域污染。
3.参数和返回值
既然是函数，不可避免地要提一下参数和返回值。
立即函数内部是可以访问外部变量的，所以很多情况下，我们并不需要传参数。如：jQuery的window实参，如果不传入。内部也是可以直接使用的。
返回值也可以直接返回给立即执行函数外的某个变量的一个对象属性（注意，外部变量var a=1;是不能通过a.newAttribute=inParameter来赋值的。）
然而，从代码的可读性等方面考虑，我们显式地传入需要的参数是一个好习惯。
（四）注意点
立即执行函数通常作为一个单独模块使用。一般没有问题，但是，建议在自己写的立即执行函数前加分号，这样可以有效地与前面代码进行隔离。否则，可能出现意想不到的错误。
如：
var c = 12
var d = c
(function () { var e = 14; }())
会报这样一个错误：
.png)
因为在我们立即执行函数模块前面代码没有一个分号来断句。那编译器就把前面的c和后面的语句当作函数调用来看了。
所以，由于很多时候，在立即执行函数之前的代码我们无法控制，为了良好的容错能力。我们一般在立即执行函数前加个分号与前面的代码断开，避免解析错误。
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