Javascript: cookie doesn't expire - drupal

Question

I'm trying to expire a cookie right after it has set, due to cookielaw restrictions in UK and NL.
Here is the code I now use:
(function ($) {
$(document).ready(function(){
if (!CookieControl.maySendCookies()) {
var now = new Date();
var expirationDate = new Date();
expirationDate.setDate(now.getDate() - 7);
alert(getCookieValue('has_js'));
document.cookie='has_js=1;expires=' + expirationDate.toGMTString();
alert(getCookieValue('has_js'));
}
});
})(jQuery);
The getCookieValue function is a function from another document to check it the cookie is actually gone. Before I expire the cookie, the value is 1, as it should be. However, when I have expired the cookie by using document.cookie='has_js=1;expires=' + expirationDate.toGMTString(); I check the value again, and it is still there.
I seriously cannot figure out why it is not being removed. I cannot wait for sessions or whatever to expire, that is not according to NL law.
Anyone any suggestions?
CMS: Drupal / Domain: localhost

Answer 1

it may be related to path, i don't know, but you can use below scripts:
function getCookieValue(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ')
c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0)
return unescape(c.substring(nameEQ.length, c.length));
}
return null;
}
function setCookieValue(name, value, days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
document.cookie = name + "=" + escape(value) + expires + "; path=/";
}
function delCookieValue(name) {
Set_Cookie(name, '', -1);
}
$(document).ready(function(){
if (!CookieControl.maySendCookies()) {
delCookieValue("has_js");
}
});