commonCookie.js

/**
* Created with JetBrains WebStorm.
* NAME: commonCookie.js
*/
(function(window,document){
var
commonCookie = {},
singleClear = {},
specialKey = 'common_cookie_special_key',

changeSpecialKey = function(val){
specialKey = val;
clearUp(specialKey);
},
urlencode = function(str){
str = (str + '').toString();
return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
},
urldecode = function(str){
return decodeURIComponent((str + '').replace(/%(?![\da-f]{2})/gi, function(){
return '%25';
}).replace(/\+/g, '%20'));
},
setcookie = function(cookieName,cookieValue,seconds,path,domain,secure){
var expires = new Date();
expires.setTime(expires.getTime() + seconds);
document.cookie = cookieName + '=' + urlencode(cookieValue) +
(expires ? ';expires=' + expires.toGMTString() : '') +
(path ? ';path=' + path : '') +
(domain ? ';domain=' + domain : '') +
(secure ? ';secure' : '');
},

getcookie = function(name){
var cookieStart = document.cookie.indexOf(name);
var cookieEnd = document.cookie.indexOf(";", cookieStart);
return cookieStart == -1 ? '' : urldecode(document.cookie.substring(cookieStart + name.length + 1, (cookieEnd > cookieStart ? cookieEnd : document.cookie.length)));
},

obj2str = function(obj) {
if(typeof obj == 'undefined') return "";
var arr = [];
if(typeof obj == "string") return "\"" + obj.replace(/([\"\\])/g,"\\$1").replace(/(\n)/g,"\\n").replace(/(\r)/g,"\\r").replace(/(\t)/g,"\\t") + "\"";
if(typeof obj == "object") {
if(!obj.sort) {
for(var i in obj)
arr.push("\"" + i + "\":" + arguments.callee(obj[i]));
if(!!document.all && !/^\n?function\s*toString\(\)\s*\{\n?\s*\[native code\]\n?\s*\}\n?\s*$/.test(obj.toString)) {
arr.push("toString:" + obj.toString.toString());
}
arr = "{" + arr.join() + "}"
}else{
for(var i = 0; i < obj.length; i++)
arr.push(arguments.callee(obj[i]))
arr = "[" + arr.join() + "]";
}
return arr;
}
if(typeof obj == "function") return "function(){}";
return obj.toString().replace(/\"\:/g,'":""');
},

get = function(name,realKey){
if(!name) return undefined;
if(typeof realKey == 'undefined') realKey = specialKey;
else singleClearOne(realKey);
var specialCookie = getcookie(realKey);
if(specialCookie == '') return undefined;
else{
try {
var cookieObj = eval('(' + specialCookie + ')');
} catch (err) {
return;
}
var result = cookieObj[name];
if(typeof result == 'object' && typeof result.e != 'undefined'){
var now = getTimeStamp();
if (now > result.e) {
set(name,undefined,realKey);
return undefined;
}
}
return result;
}
},

getTimeStamp = function(){
return Date.parse(new Date())/1000;
},

set = function(name,value,realKey){
if(typeof realKey == 'undefined') realKey = specialKey;
else singleClearOne(realKey);
var specialCookie = getcookie(realKey),objStr,cookieObj;
if (specialCookie == '') cookieObj = {};
else {
try {
cookieObj = eval('(' + specialCookie + ')');
} catch (err) {
return;
}
}
if(value == undefined) delete cookieObj[name];
else cookieObj[name] = value;
objStr = obj2str(cookieObj);
if(objStr.length <= 3800)
setcookie(realKey,objStr,315360000000,'/');
},

clearUp = function(specialKey){
var
specialCookie = getcookie(specialKey),
now = getTimeStamp(),
objStr,cookieObj;
if(specialCookie == '') return ;
else {
try {
cookieObj = eval('(' + specialCookie + ')');
} catch (err) {
return;
}
}
var flag = 0;
for(var key in cookieObj){
var result = cookieObj[key];
if(typeof result == 'object' && typeof result.e !== 'undefined'){
if(now >= result.e){
delete cookieObj[key];
flag = 1;
}
}
}
if (flag == 1) {
objStr = obj2str(cookieObj);
if (objStr.length <= 3800)
setcookie(specialKey, objStr, 315360000000, '/');
}
},

singleClearOne = function(key){
if(key && ((typeof singleClear[key] == 'undefined' ) || singleClear[key] == 0)){
clearUp(key);
singleClear[key] = 1;
}
};

commonCookie.getTimeStamp = getTimeStamp;
commonCookie.changeSpecialKey = changeSpecialKey;
commonCookie.setcookie = setcookie;
commonCookie.getcookie = getcookie;
commonCookie.get = get;
commonCookie.set = set;
window.commonCookie = commonCookie;
clearUp(specialKey);
})(window,document);

调用：

var now = commonCookie.getTimeStamp();
commonCookie.set("tip",{e:now + 3600 * 24 * 3});

commonCookie.get("tip");