Javascript Not deleting all cookies

Question

I am using following code to delete a cookie:

document.cookie = "CookieName=; expires=Thu, 01 Jan 1970 00:00:00 UTC";

There are two cookies, one in on domain www.websiteaddress.com and other is on .websiteaddress.com. When I am on page www.websiteaddress.com the cookie having domain address www.websiteaddress.com gets deleted but other one is not deleted. How can I delete both cookies while loading javascript on www.websiteaddress.com

Answer 1

You are not allowed to delete cookies on another site. Because there is no guarantee that you own both www.websiteaddress.com and .websiteaddress.com. You can only delete cookies that you set for the current domain.