这篇文章主要介绍了JavaScript操作cookie类,实例分析了javascript针对cookie的设置、读取、删除等常用技巧,非常具有实用价值,需要的朋友可以参考下
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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