Dom7.js 源码阅读备份
在Framework7,其特色的HTML框架,可以创建精美的iOS应用; 她有自己的 DOM7- 一个集成了大部分常用DOM操作的高性能库。你不需要学习任何新的东西,因为她的用法和大名鼎鼎的jQuery几乎是一样的,包括大部分常用的方法和jquery风格的链式调用。去查看了一下dom7.js的源码,发现非常适合学习;
源码如下:
- /*===========================
- Dom7 Library
- ===========================*/
- var Dom7 = (function () {
- var Dom7 = function (arr) {
- var _this = this, i = 0;
- // Create array-like object
- for (i = 0; i < arr.length; i++) {
- _this[i] = arr[i];
- }
- _this.length = arr.length;
- // Return collection with methods
- return this;
- };
- var $ = function (selector, context) {
- var arr = [], i = 0;
- if (selector && !context) {
- if (selector instanceof Dom7) {
- return selector;
- }
- }
- if (selector) {
- // String
- if (typeof selector === 'string') {
- var els, tempParent, html = selector.trim();
- if (html.indexOf('<') >= 0 && html.indexOf('>') >= 0) {
- var toCreate = 'div';
- if (html.indexOf('<li') === 0) toCreate = 'ul';
- if (html.indexOf('<tr') === 0) toCreate = 'tbody';
- if (html.indexOf('<td') === 0 || html.indexOf('<th') === 0) toCreate = 'tr';
- if (html.indexOf('<tbody') === 0) toCreate = 'table';
- if (html.indexOf('<option') === 0) toCreate = 'select';
- tempParent = document.createElement(toCreate);
- tempParent.innerHTML = selector;
- for (i = 0; i < tempParent.childNodes.length; i++) {
- arr.push(tempParent.childNodes[i]);
- }
- }
- else {
- if (!context && selector[0] === '#' && !selector.match(/[ .<>:~]/)) {
- // Pure ID selector
- els = [document.getElementById(selector.split('#')[1])];
- }
- else {
- // Other selectors
- els = (context || document).querySelectorAll(selector);
- }
- for (i = 0; i < els.length; i++) {
- if (els[i]) arr.push(els[i]);
- }
- }
- }
- // Node/element
- else if (selector.nodeType || selector === window || selector === document) {
- arr.push(selector);
- }
- //Array of elements or instance of Dom
- else if (selector.length > 0 && selector[0].nodeType) {
- for (i = 0; i < selector.length; i++) {
- arr.push(selector[i]);
- }
- }
- }
- return new Dom7(arr);
- };
- Dom7.prototype = {
- // Classes and attriutes
- addClass: function (className) {
- if (typeof className === 'undefined') {
- return this;
- }
- var classes = className.split(' ');
- for (var i = 0; i < classes.length; i++) {
- for (var j = 0; j < this.length; j++) {
- this[j].classList.add(classes[i]);
- }
- }
- return this;
- },
- removeClass: function (className) {
- var classes = className.split(' ');
- for (var i = 0; i < classes.length; i++) {
- for (var j = 0; j < this.length; j++) {
- this[j].classList.remove(classes[i]);
- }
- }
- return this;
- },
- hasClass: function (className) {
- if (!this[0]) return false;
- else return this[0].classList.contains(className);
- },
- toggleClass: function (className) {
- var classes = className.split(' ');
- for (var i = 0; i < classes.length; i++) {
- for (var j = 0; j < this.length; j++) {
- this[j].classList.toggle(classes[i]);
- }
- }
- return this;
- },
- attr: function (attrs, value) {
- if (arguments.length === 1 && typeof attrs === 'string') {
- // Get attr
- if (this[0]) return this[0].getAttribute(attrs);
- else return undefined;
- }
- else {
- // Set attrs
- for (var i = 0; i < this.length; i++) {
- if (arguments.length === 2) {
- // String
- this[i].setAttribute(attrs, value);
- }
- else {
- // Object
- for (var attrName in attrs) {
- this[i][attrName] = attrs[attrName];
- this[i].setAttribute(attrName, attrs[attrName]);
- }
- }
- }
- return this;
- }
- },
- removeAttr: function (attr) {
- for (var i = 0; i < this.length; i++) {
- this[i].removeAttribute(attr);
- }
- return this;
- },
- data: function (key, value) {
- if (typeof value === 'undefined') {
- // Get value
- if (this[0]) {
- var dataKey = this[0].getAttribute('data-' + key);
- if (dataKey) return dataKey;
- else if (this[0].dom7ElementDataStorage && (key in this[0].dom7ElementDataStorage)) return this[0].dom7ElementDataStorage[key];
- else return undefined;
- }
- else return undefined;
- }
- else {
- // Set value
- for (var i = 0; i < this.length; i++) {
- var el = this[i];
- if (!el.dom7ElementDataStorage) el.dom7ElementDataStorage = {};
- el.dom7ElementDataStorage[key] = value;
- }
- return this;
- }
- },
- // Transforms
- transform : function (transform) {
- for (var i = 0; i < this.length; i++) {
- var elStyle = this[i].style;
- elStyle.webkitTransform = elStyle.MsTransform = elStyle.msTransform = elStyle.MozTransform = elStyle.OTransform = elStyle.transform = transform;
- }
- return this;
- },
- transition: function (duration) {
- if (typeof duration !== 'string') {
- duration = duration + 'ms';
- }
- for (var i = 0; i < this.length; i++) {
- var elStyle = this[i].style;
- elStyle.webkitTransitionDuration = elStyle.MsTransitionDuration = elStyle.msTransitionDuration = elStyle.MozTransitionDuration = elStyle.OTransitionDuration = elStyle.transitionDuration = duration;
- }
- return this;
- },
- //Events
- on: function (eventName, targetSelector, listener, capture) {
- function handleLiveEvent(e) {
- var target = e.target;
- if ($(target).is(targetSelector)) listener.call(target, e);
- else {
- var parents = $(target).parents();
- for (var k = 0; k < parents.length; k++) {
- if ($(parents[k]).is(targetSelector)) listener.call(parents[k], e);
- }
- }
- }
- var events = eventName.split(' ');
- var i, j;
- for (i = 0; i < this.length; i++) {
- if (typeof targetSelector === 'function' || targetSelector === false) {
- // Usual events
- if (typeof targetSelector === 'function') {
- listener = arguments[1];
- capture = arguments[2] || false;
- }
- for (j = 0; j < events.length; j++) {
- this[i].addEventListener(events[j], listener, capture);
- }
- }
- else {
- //Live events
- for (j = 0; j < events.length; j++) {
- if (!this[i].dom7LiveListeners) this[i].dom7LiveListeners = [];
- this[i].dom7LiveListeners.push({listener: listener, liveListener: handleLiveEvent});
- this[i].addEventListener(events[j], handleLiveEvent, capture);
- }
- }
- }
- return this;
- },
- off: function (eventName, targetSelector, listener, capture) {
- var events = eventName.split(' ');
- for (var i = 0; i < events.length; i++) {
- for (var j = 0; j < this.length; j++) {
- if (typeof targetSelector === 'function' || targetSelector === false) {
- // Usual events
- if (typeof targetSelector === 'function') {
- listener = arguments[1];
- capture = arguments[2] || false;
- }
- this[j].removeEventListener(events[i], listener, capture);
- }
- else {
- // Live event
- if (this[j].dom7LiveListeners) {
- for (var k = 0; k < this[j].dom7LiveListeners.length; k++) {
- if (this[j].dom7LiveListeners[k].listener === listener) {
- this[j].removeEventListener(events[i], this[j].dom7LiveListeners[k].liveListener, capture);
- }
- }
- }
- }
- }
- }
- return this;
- },
- once: function (eventName, targetSelector, listener, capture) {
- var dom = this;
- if (typeof targetSelector === 'function') {
- targetSelector = false;
- listener = arguments[1];
- capture = arguments[2];
- }
- function proxy(e) {
- listener(e);
- dom.off(eventName, targetSelector, proxy, capture);
- }
- dom.on(eventName, targetSelector, proxy, capture);
- },
- trigger: function (eventName, eventData) {
- for (var i = 0; i < this.length; i++) {
- var evt;
- try {
- evt = new window.CustomEvent(eventName, {detail: eventData, bubbles: true, cancelable: true});
- }
- catch (e) {
- evt = document.createEvent('Event');
- evt.initEvent(eventName, true, true);
- evt.detail = eventData;
- }
- this[i].dispatchEvent(evt);
- }
- return this;
- },
- transitionEnd: function (callback) {
- var events = ['webkitTransitionEnd', 'transitionend', 'oTransitionEnd', 'MSTransitionEnd', 'msTransitionEnd'],
- i, j, dom = this;
- function fireCallBack(e) {
- /*jshint validthis:true */
- if (e.target !== this) return;
- callback.call(this, e);
- for (i = 0; i < events.length; i++) {
- dom.off(events[i], fireCallBack);
- }
- }
- if (callback) {
- for (i = 0; i < events.length; i++) {
- dom.on(events[i], fireCallBack);
- }
- }
- return this;
- },
- // Sizing/Styles
- width: function () {
- if (this[0] === window) {
- return window.innerWidth;
- }
- else {
- if (this.length > 0) {
- return parseFloat(this.css('width'));
- }
- else {
- return null;
- }
- }
- },
- outerWidth: function (includeMargins) {
- if (this.length > 0) {
- if (includeMargins)
- return this[0].offsetWidth + parseFloat(this.css('margin-right')) + parseFloat(this.css('margin-left'));
- else
- return this[0].offsetWidth;
- }
- else return null;
- },
- height: function () {
- if (this[0] === window) {
- return window.innerHeight;
- }
- else {
- if (this.length > 0) {
- return parseFloat(this.css('height'));
- }
- else {
- return null;
- }
- }
- },
- outerHeight: function (includeMargins) {
- if (this.length > 0) {
- if (includeMargins)
- return this[0].offsetHeight + parseFloat(this.css('margin-top')) + parseFloat(this.css('margin-bottom'));
- else
- return this[0].offsetHeight;
- }
- else return null;
- },
- offset: function () {
- if (this.length > 0) {
- var el = this[0];
- var box = el.getBoundingClientRect();
- var body = document.body;
- var clientTop = el.clientTop || body.clientTop || 0;
- var clientLeft = el.clientLeft || body.clientLeft || 0;
- var scrollTop = window.pageYOffset || el.scrollTop;
- var scrollLeft = window.pageXOffset || el.scrollLeft;
- return {
- top: box.top + scrollTop - clientTop,
- left: box.left + scrollLeft - clientLeft
- };
- }
- else {
- return null;
- }
- },
- css: function (props, value) {
- var i;
- if (arguments.length === 1) {
- if (typeof props === 'string') {
- if (this[0]) return window.getComputedStyle(this[0], null).getPropertyValue(props);
- }
- else {
- for (i = 0; i < this.length; i++) {
- for (var prop in props) {
- this[i].style[prop] = props[prop];
- }
- }
- return this;
- }
- }
- if (arguments.length === 2 && typeof props === 'string') {
- for (i = 0; i < this.length; i++) {
- this[i].style[props] = value;
- }
- return this;
- }
- return this;
- },
- //Dom manipulation
- each: function (callback) {
- for (var i = 0; i < this.length; i++) {
- callback.call(this[i], i, this[i]);
- }
- return this;
- },
- html: function (html) {
- if (typeof html === 'undefined') {
- return this[0] ? this[0].innerHTML : undefined;
- }
- else {
- for (var i = 0; i < this.length; i++) {
- this[i].innerHTML = html;
- }
- return this;
- }
- },
- is: function (selector) {
- if (!this[0]) return false;
- var compareWith, i;
- if (typeof selector === 'string') {
- var el = this[0];
- if (el === document) return selector === document;
- if (el === window) return selector === window;
- if (el.matches) return el.matches(selector);
- else if (el.webkitMatchesSelector) return el.webkitMatchesSelector(selector);
- else if (el.mozMatchesSelector) return el.mozMatchesSelector(selector);
- else if (el.msMatchesSelector) return el.msMatchesSelector(selector);
- else {
- compareWith = $(selector);
- for (i = 0; i < compareWith.length; i++) {
- if (compareWith[i] === this[0]) return true;
- }
- return false;
- }
- }
- else if (selector === document) return this[0] === document;
- else if (selector === window) return this[0] === window;
- else {
- if (selector.nodeType || selector instanceof Dom7) {
- compareWith = selector.nodeType ? [selector] : selector;
- for (i = 0; i < compareWith.length; i++) {
- if (compareWith[i] === this[0]) return true;
- }
- return false;
- }
- return false;
- }
- },
- index: function () {
- if (this[0]) {
- var child = this[0];
- var i = 0;
- while ((child = child.previousSibling) !== null) {
- if (child.nodeType === 1) i++;
- }
- return i;
- }
- else return undefined;
- },
- eq: function (index) {
- if (typeof index === 'undefined') return this;
- var length = this.length;
- var returnIndex;
- if (index > length - 1) {
- return new Dom7([]);
- }
- if (index < 0) {
- returnIndex = length + index;
- if (returnIndex < 0) return new Dom7([]);
- else return new Dom7([this[returnIndex]]);
- }
- return new Dom7([this[index]]);
- },
- append: function (newChild) {
- var i, j;
- for (i = 0; i < this.length; i++) {
- if (typeof newChild === 'string') {
- var tempDiv = document.createElement('div');
- tempDiv.innerHTML = newChild;
- while (tempDiv.firstChild) {
- this[i].appendChild(tempDiv.firstChild);
- }
- }
- else if (newChild instanceof Dom7) {
- for (j = 0; j < newChild.length; j++) {
- this[i].appendChild(newChild[j]);
- }
- }
- else {
- this[i].appendChild(newChild);
- }
- }
- return this;
- },
- prepend: function (newChild) {
- var i, j;
- for (i = 0; i < this.length; i++) {
- if (typeof newChild === 'string') {
- var tempDiv = document.createElement('div');
- tempDiv.innerHTML = newChild;
- for (j = tempDiv.childNodes.length - 1; j >= 0; j--) {
- this[i].insertBefore(tempDiv.childNodes[j], this[i].childNodes[0]);
- }
- // this[i].insertAdjacentHTML('afterbegin', newChild);
- }
- else if (newChild instanceof Dom7) {
- for (j = 0; j < newChild.length; j++) {
- this[i].insertBefore(newChild[j], this[i].childNodes[0]);
- }
- }
- else {
- this[i].insertBefore(newChild, this[i].childNodes[0]);
- }
- }
- return this;
- },
- insertBefore: function (selector) {
- var before = $(selector);
- for (var i = 0; i < this.length; i++) {
- if (before.length === 1) {
- before[0].parentNode.insertBefore(this[i], before[0]);
- }
- else if (before.length > 1) {
- for (var j = 0; j < before.length; j++) {
- before[j].parentNode.insertBefore(this[i].cloneNode(true), before[j]);
- }
- }
- }
- },
- insertAfter: function (selector) {
- var after = $(selector);
- for (var i = 0; i < this.length; i++) {
- if (after.length === 1) {
- after[0].parentNode.insertBefore(this[i], after[0].nextSibling);
- }
- else if (after.length > 1) {
- for (var j = 0; j < after.length; j++) {
- after[j].parentNode.insertBefore(this[i].cloneNode(true), after[j].nextSibling);
- }
- }
- }
- },
- next: function (selector) {
- if (this.length > 0) {
- if (selector) {
- if (this[0].nextElementSibling && $(this[0].nextElementSibling).is(selector)) return new Dom7([this[0].nextElementSibling]);
- else return new Dom7([]);
- }
- else {
- if (this[0].nextElementSibling) return new Dom7([this[0].nextElementSibling]);
- else return new Dom7([]);
- }
- }
- else return new Dom7([]);
- },
- nextAll: function (selector) {
- var nextEls = [];
- var el = this[0];
- if (!el) return new Dom7([]);
- while (el.nextElementSibling) {
- var next = el.nextElementSibling;
- if (selector) {
- if($(next).is(selector)) nextEls.push(next);
- }
- else nextEls.push(next);
- el = next;
- }
- return new Dom7(nextEls);
- },
- prev: function (selector) {
- if (this.length > 0) {
- if (selector) {
- if (this[0].previousElementSibling && $(this[0].previousElementSibling).is(selector)) return new Dom7([this[0].previousElementSibling]);
- else return new Dom7([]);
- }
- else {
- if (this[0].previousElementSibling) return new Dom7([this[0].previousElementSibling]);
- else return new Dom7([]);
- }
- }
- else return new Dom7([]);
- },
- prevAll: function (selector) {
- var prevEls = [];
- var el = this[0];
- if (!el) return new Dom7([]);
- while (el.previousElementSibling) {
- var prev = el.previousElementSibling;
- if (selector) {
- if($(prev).is(selector)) prevEls.push(prev);
- }
- else prevEls.push(prev);
- el = prev;
- }
- return new Dom7(prevEls);
- },
- parent: function (selector) {
- var parents = [];
- for (var i = 0; i < this.length; i++) {
- if (selector) {
- if ($(this[i].parentNode).is(selector)) parents.push(this[i].parentNode);
- }
- else {
- parents.push(this[i].parentNode);
- }
- }
- return $($.unique(parents));
- },
- parents: function (selector) {
- var parents = [];
- for (var i = 0; i < this.length; i++) {
- var parent = this[i].parentNode;
- while (parent) {
- if (selector) {
- if ($(parent).is(selector)) parents.push(parent);
- }
- else {
- parents.push(parent);
- }
- parent = parent.parentNode;
- }
- }
- return $($.unique(parents));
- },
- find : function (selector) {
- var foundElements = [];
- for (var i = 0; i < this.length; i++) {
- var found = this[i].querySelectorAll(selector);
- for (var j = 0; j < found.length; j++) {
- foundElements.push(found[j]);
- }
- }
- return new Dom7(foundElements);
- },
- children: function (selector) {
- var children = [];
- for (var i = 0; i < this.length; i++) {
- var childNodes = this[i].childNodes;
- for (var j = 0; j < childNodes.length; j++) {
- if (!selector) {
- if (childNodes[j].nodeType === 1) children.push(childNodes[j]);
- }
- else {
- if (childNodes[j].nodeType === 1 && $(childNodes[j]).is(selector)) children.push(childNodes[j]);
- }
- }
- }
- return new Dom7($.unique(children));
- },
- remove: function () {
- for (var i = 0; i < this.length; i++) {
- if (this[i].parentNode) this[i].parentNode.removeChild(this[i]);
- }
- return this;
- },
- add: function () {
- var dom = this;
- var i, j;
- for (i = 0; i < arguments.length; i++) {
- var toAdd = $(arguments[i]);
- for (j = 0; j < toAdd.length; j++) {
- dom[dom.length] = toAdd[j];
- dom.length++;
- }
- }
- return dom;
- }
- };
- $.fn = Dom7.prototype;
- $.unique = function (arr) {
- var unique = [];
- for (var i = 0; i < arr.length; i++) {
- if (unique.indexOf(arr[i]) === -1) unique.push(arr[i]);
- }
- return unique;
- };
- return $;
- })();
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