Javascript(JS)对Cookie的读取、删除、写入操作帮助方法

 1 var CookieUtils = {
 2     get: function (name) {
 3         var cookieName = encodeURIComponent(name) + '=',
 4             cookieStart = document.cookie.indexOf(cookieName),
 5             cookieValue = null;
 6         if (cookieStart > -1) {
 7             var cookieEnd = document.cookie.indexOf(';', cookieStart);
 8             if (cookieEnd == -1) {
 9                 cookieEnd = document.cookie.length;
10             }
11             cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd));
12         }
13         return cookieValue;
14     },
15     set: function (name, value, expires, path, domain, secure) {
16         var cookieText = encodeURIComponent(name) + "=" + encodeURIComponent(value);
17         if (expires instanceof Date) {
18             cookieText += "; expried=" + expires.toGMTString();
19         }
20         if (path) {
21             cookieText += "; path=" + path;
22         }
23         if (domain) {
24             cookieText += "; domain=" + domain;
25         }
26         if (secure) {
27             cookieText += "; secure";
28         }
29         document.cookie = cookieText;
30     },
31     unset: function (name, path, domain, secure) {
32         this.set(name, "", new Date(0), path, domain, secure);
33     }
34 }

这样即可以调用CookieUtils.get/set/unset方法进行Cookie操作。

项目完成后会对本方法进行进一步完善。

参考自《Javascript高级程序设计》