JavaScript设置、获取、清除单值和多值cookie的方法

废话不多说了，直接给大家贴代码了。

具体代码如下：

var cookieUtil = (function () {
   var cookie = function () {
     // 获取单值cookie
     this.get = function(name) {
var start = document.cookie.indexOf(encodeURIComponent(name)) ;
var end = document.cookie.indexOf(';', start) ;
if(end == -) {
  end = document.cookie.length;
}
return decodeURIComponent(document.cookie.substring(start+name.length+,end));
     };
     // 设置单值cookie
     this.set = function(name, value, expires, path, domain, secure) {
var cookieText = encodeURIComponent(name) + "=" + encodeURIComponent(value);
// 设置默认过期时间为七天
if(expires == undefined) {
  var date = new Date();
  date.setTime(date.getTime() + ****);
  expires = date ;
}
if(expires instanceof Date) {
  cookieText += "; expires=" + expires.toGMTString();
}
if(path != undefined) {
  cookieText += "; path=" + path;
}
if(domain != undefined) {
  cookieText += "; domain" + domain;
}
if(secure != undefined) {
  cookieText += "; secure";
}
document.cookie = cookieText;
     };
     // 清除单值cookie
     this.unset = function(name, path, domain, secure) {
this.set(name, '', new Date(), path, domain, secure );
     };
     // 设置多值cookie
     this.setAll = function(name, subcookies, expires, path, domain, secure) {
var cookieText = ";" + encodeURIComponent(name) + "=",
arr = new Array();
for(var attr in subcookies) {
  arr.push([encodeURIComponent(attr)] + ":" + encodeURIComponent(subcookies[attr]));
} 
this.set(name, arr.join('&'), expires, path, domain, secure);
     };
     // 获取多值cookie
     this.getAll = function(name) {
var obj = {};
var arr = this.get(name).split('&');
for(var i = , len = arr.length; i < len; i++) {
  var tmpArr = arr[i].split(':');
  obj[decodeURIComponent(tmpArr[])] = decodeURIComponent(tmpArr[]);
}
return obj;
     };
     // 获取多值cookie的子cookie
     this.getSub = function(name, subname) {
var obj = this.getAll(name);
return obj[subname];
     };
     // 清除指定的多值cookie
     this.unsetAll = function(name,path,domain,secure) {
this.unset(name, '', new Date(), path, domain, secure);
     };
     // 清除指定多值cookie的子cookie
     this.unsetSub = function(name, subname,path, domain, secure) {
var obj = this.getAll(name);
delete obj[subname];
this.setAll(name, obj, null, path, domain, secure);
     };
   };
   return new cookie();
 })();

 以上代码就是本文给大家介绍Javascript设置、获取、清除单值和多值cookie的方法，有哪里不清楚的地方欢迎给我留言。