cookie

        window.onload= function () {
//           document.cookie='名称=值;expires='+时间;
             var date=new  Date();
             date.setDate(date.getDate()+5);
             document.cookie='username=aaa;expires='+date.toGMTString();
             document.cookie='age=32';
             alert(document.cookie);
        };

        window.onload= function () {
//           document.cookie='名称=值;expires='+时间;
             var date=new  Date();
//            alert(encodeURI('你好'));
//            alert(decodeURI('%E4%BD%A0%E5%A5%BD'));
             date.setDate(date.getDate()+5);
             document.cookie='username='+encodeURI('aaaa\n你好')+';expires='+date.toGMTString(); //username=aaaa; age=32
             document.cookie='age=32';
             alert(decodeURI(document.cookie));
        };