JavaScript 拾碎[二] JavaScript 操作cookie 类

 

用法：
一、设置cookie
var cookie = new JSCookie();
// 普通设置
cookie .SetCookie("key1","val1");

// 过期时间为一年
var expire_time = new Date();
expire_time.setFullYear(expire_time.getFullYear() + 1);
cookie .SetCookie("key2","val2",expire_time);

// 设置域及路径，带过期时间
cookie .SetCookie("key3","val3",expire_time,".cnblogs.com","/");

// 设置带子键的cookie,子键分别是k1,k2,k3
cookie .SetCookie("key4","k1=1&k2=2&k3=3");

 

二、读取cookie
// 简单获取
cookie .GetCookie("key1");
cookie .GetCookie("key2");
cookie .GetCookie("key3");
cookie .GetCookie("key4");
// 获取key4的子键k1值
cookie .GetChild("key4","k1");

 

三、删除
cookie .Expire("key1");
cookie .Expire("key2");
cookie .Expire("key3");
cookie .Expire("key4");

 

示例：

<script type="text/javascript">

 String.prototype.Trim = function()

 {

     return this.replace(/^\s+/g,"").replace(/\s+$/g,"");

 }

 function JSCookie()

 {

     this.GetCookie = function(key)

      {

         var cookie = document.cookie;

         var cookieArray = cookie.split(’;’);

         var getvalue = "";

         for(var i = 0;i<cookieArray.length;i++)

          {

             if(cookieArray[i].Trim().substr(0,key.length) == key)

              {

                  getvalue = cookieArray[i].Trim().substr(key.length + 1);

                 break;

              }

          }

         return getvalue;

      };

     this.GetChild = function(cookiekey,childkey)

      {

         var child = this.GetCookie(cookiekey);

         var childs = child.split(’&’);

         var getvalue = "";

         for(var i = 0;i < childs.length;i++)

          {

             if(childs[i].Trim().substr(0,childkey.length) == childkey)

              {

                  getvalue = childs[i].Trim().substr(childkey.length + 1);

                 break;

              }

          }

         return getvalue;

      };

     this.SetCookie = function(key,value,expire,domain,path)

      {

         var cookie = "";

         if(key != null && value != null)

              cookie += key + "=" + value + ";";

         if(expire != null)

              cookie += "expires=" + expire.toGMTString() + ";";

         if(domain != null)

              cookie += "domain=" + domain + ";";

         if(path != null)

              cookie += "path=" + path + ";";

          document.cookie = cookie;

      };

     this.Expire = function(key)

      {

          expire_time = new Date();

          expire_time.setFullYear(expire_time.getFullYear() - 1);

         var cookie = " " + key + "=e;expires=" + expire_time + ";"

          document.cookie = cookie;

      }

 }

</script>

完毕.

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