js判断用户是否禁用了cookie

function CookieEnable()
{
var result = false;
if (navigator.cookiesEnabled) return true;

document.cookie = "testcookie=yes;";

var cookieSet = document.cookie;

if (cookieSet.indexOf("testcookie=yes") > -1) result = true;

document.cookie = "";

return result;
}

if(!CookieEnable()){
alert("对不起，您的浏览器的Cookie功能被禁用，请开启");
}