JavaScript操作cookie类实例

前端技术 2023/09/07 JavaScript

本文实例讲述了JavaScript操作cookie类。分享给大家供大家参考。具体如下：

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>

至此完毕.

希望本文所述对大家的javascript程序设计有所帮助。

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