使用纯生js操作cookie

前段时间做项目的时候要使用js操作cookie,jquery也有相应的插件,不过还是觉得纯生的js比较好,毕竟不依赖jq.

 

 1 //获得coolie 的值
 2 function cookie(name) {
 3     var cookieArray = document.cookie.split("; "); //得到分割的cookie名值对    
 4     var cookie = new Object();
 5 
 6     for (var i = 0; i < cookieArray.length; i++) {
 7 
 8         var arr = cookieArray[i].split("=");       //将名和值分开
 9 
10         //如果是指定的cookie，则返回它的值    
11         if (arr[0] == name) {
12             return unescape(arr[1]);
13         }
14     }
15 
16     return "";
17 }
18 
19 function delCookie(name)//删除cookie
20 {
21     document.cookie = name + "=;expires=" + (new Date(0)).toGMTString();
22 }
23 
24 function getCookie(objName) {//获取指定名称的cookie的值
25 
26     var arrStr = document.cookie.split("; ");
27 
28     for (var i = 0; i < arrStr.length; i++) {
29 
30         var temp = arrStr[i].split("=");
31 
32         if (temp[0] == objName) return unescape(temp[1]);
33 
34     }
35 }
36 
37 function addCookie(objName, objValue, objHours) {      //添加cookie
38 
39     var str = objName + "=" + escape(objValue);
40 
41     if (objHours > 0) {                               //为时不设定过期时间，浏览器关闭时cookie自动消失
42 
43         var date = new Date();
44 
45         var ms = objHours * 3600 * 1000;
46 
47         date.setTime(date.getTime() + ms);
48 
49         str += "; expires=" + date.toGMTString();
50 
51     }
52 
53     document.cookie = str;
54 }
55 
56 function SetCookie(name, value)//两个参数，一个是cookie的名子，一个是值
57 {
58     var Days = 30; //此 cookie 将被保存 30 天
59     var exp = new Date();    //new Date("December 31, 9998");
60     exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);
61 
62     document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();
63 }
64 
65 function getCookie(name)//取cookies函数        
66 {
67     var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
68 
69     if (arr != null) {
70         return unescape(arr[2]);
71     }
72 
73     return null;
74 }
75 
76 function delCookie(name)//删除cookie
77 {
78     var exp = new Date();
79     exp.setTime(exp.getTime() - 1);
80     var cval = getCookie(name);
81 
82     if (cval != null) {
83         document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
84     }
85 }