为什么这个javascript不起作用？

Question

I'm trying to detect the existence of a specific cookie "abc". The code that I'm using for this is

var iterations = 0;
var interval = setInterval(checkCookie, 1000);
var cookie=getCookie("abc");
function checkCookie() {
    iterations++;    
    if (iterations >= 3 || cookie !=null || cookie !="")
        clearInterval(interval);
    alert("Iteration " + iterations );
}

The only problem with this code is that it doesn't detect the existence of a cookie. Even when I change the cookie name to one that already exists.You can check it out here http://jsfiddle.net/aMZj3/

Answer 1

你只是在循环之前调用一次GetCookie，你想将它移动到checkCookie函数中以在每次迭代时检查它。

Answer 2

Just a Note: As per my knowledge if you are working under domain D1 then you wont be able to read the cookies set by another domain D2. That means you will be able to read cookie "abc" if it is set by the same domain under which you are working.