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,k3cookie .SetCookie("key4","k1=1&k2=2&k3=3");

// 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");

cookie .Expire("key1");cookie .Expire("key2");cookie .Expire("key3");cookie .Expire("key4");

<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>