js javaScript 操作cookie

String.prototype.Trim = function()<br /> {<br /> return this.replace(/^/s+/g,"").replace(//s+$/g,"");<br /> }</p><p> function JSCookie()<br /> {<br /> this.GetCookie = function(key)<br /> {<br /> var cookie = document.cookie;<br /> var cookieArray = cookie.split(';');<br /> var getvalue = "";<br /> for(var i = 0;i<cookieArray.length;i++)<br /> {</p><p> if(cookieArray[i].Trim().substr(0,key.length) == key)<br /> {<br /> getvalue = cookieArray[i].Trim().substr(key.length + 1);<br /> break;<br /> }<br /> }</p><p> return getvalue;<br /> };<br /> this.GetChild = function(cookiekey,childkey)<br /> {<br /> var child = this.GetCookie(cookiekey);<br /> var childs = child.split('&');<br /> var getvalue = "";</p><p> for(var i = 0;i < childs.length;i++)<br /> {<br /> if(childs[i].Trim().substr(0,childkey.length) == childkey)<br /> {<br /> getvalue = childs[i].Trim().substr(childkey.length + 1);<br /> break;<br /> }<br /> }<br /> return getvalue;<br /> };<br /> this.SetCookie = function(key,value,expire,domain,path)<br /> {<br /> var cookie = "";<br /> if(key != null && value != null)<br /> cookie += key + "=" + value + ";";<br /> if(expire != null)<br /> cookie += "expires=" + expire.toGMTString() + ";";<br /> if(domain != null)<br /> cookie += "domain=" + domain + ";";<br /> if(path != null)<br /> cookie += "path=" + path + ";";<br /> document.cookie = cookie;<br /> };<br /> this.Expire = function(key)<br /> {<br /> expire_time = new Date();<br /> expire_time.setFullYear(expire_time.getFullYear() - 1);<br /> var cookie = " " + key + "=e;expires=" + expire_time + ";"<br /> document.cookie = cookie;<br /> }<br />}</p><p>用法：<br />一、設定cookie<br />var cookie = new JSCookie();<br />//普通設定<br />cookie.SetCookie("key1","val1");</p><p>//到期時間為一年<br />var expire_time = new Date();<br />expire_time.setFullYear(expire_time.getFullYear() + 1);<br />cookie.SetCookie("key2","val2",expire_time);</p><p>//設定域及路徑，帶到期時間<br />cookie.SetCookie("key3","val3",expire_time,".cnblogs.com","/");</p><p>//設定帶子鍵的cookie,子鍵分別是k1,k2,k3<br />cookie.SetCookie("key4","k1=1&k2=2&k3=3");</p><p>二、讀取cookie<br />//簡單擷取<br />cookie.GetCookie("key1");<br />cookie.GetCookie("key2");<br />cookie.GetCookie("key3");<br />cookie.GetCookie("key4");<br />//擷取key4的子鍵k1值<br />cookie.GetChild("key4","k1");</p><p>三、刪除<br />cookie.Expire("key1");<br />cookie.Expire("key2");<br />cookie.Expire("key3");<br />cookie.Expire("key4");<br />

轉自：http://topic.csdn.net/u/20100827/22/2335d1ad-a335-4c5a-8391-1736c998ea46.html