Question

Say I have two apps, http://www.test.com and sub.test.com, now in sub.test.com, I create a window to load http://www.test.com with codes like :

window.open('www.test.com'); 

So the window just popup and load http://www.test.com successfully.
Then I set a cookie in sub.test.com, say “uname=wong2;domain=.test.com”, I’ve learned that with set to domain=.test.com, all sites with domain test.com(such as http://www.test.com, aaa.test.com, test.com) can read the cookie.

But when I try to load the cookie from the window that just popup with http://www.test.com, it can’t get it.

Then I found that if I don’t use window.open but directly open http://www.test.com in browser, it works.

So is there some restrictions on window.open and cookie?

Answer 1

just check how you set the cookie:

var domain = 'test.com';
var expires = (function(days){
    date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    return date.toUTCString();
})(5);
var name = 'myCookie';
var path = '/';
var value = 'foo';    

document.cookie = name + "=" + encodeURIComponent(value) + "; expires=" + expires + "; path='" + path + "'; domain=" + domain + ";";