js javaScript 操作cookie

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; } } 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");

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