<script>
function fnSetCookie(_name,_value,_expires){
var o = new Date();
o.setDate(_expires * o.getDate());
document.cookie = _name + '=' + _value + '; expires=' + o.toGMTString();
}
function fnGetCookie(_name){
var sCookie = document.cookie,sNewCookie,x = sCookie.indexOf(_name),y;
if (x != -1){
e = sCookie.indexOf(';',x);
sNewCookie = sCookie.substring(x+ _name.length + 1,e != -1 ? e : undefined);
return sNewCookie;
}
return 'null';
}
setTimeout(function(){
var $$$ = function(_id,e){
return document.getElementById(_id).innerHTML = e;
};
fnSetCookie('dandan',3333,60);
$$$('myvalue',fnGetCookie('dandan'));
fnSetCookie('dandan',3333,-60);
$$$('mydelete','已删除');
$$$('mycs',fnGetCookie('dandan'));
},0);
</script>
<p>设置cookie 名称 dandan 值 为 3333 有效期 60 天</p>
<p>获取到的值是</p>
<p id="myvalue"></p>
<p id="mydelete"></p>
<p>再次获取cookie的值是</p>
<p id="mycs"></p>
// 我觉得楼主应该把代码贴出来