Javascript cookie removal not working on Chrome

Question

I'm using javascript to remove a cookie but for some reason it isn't working with Chrome. The script I'm using is;

function clearCookie()
{
   document.cookie = 'myCookie=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/myPath/';
}

This works on;

• IE 8.0.6
• Firefox 3.6.12

..but doesn't work on Chrome 7.0.517.44, after the cookie is supposed to be cleared I can still see it and the value hasn't changed.

Any ideas? Are there any user settings in Chrome that might prevent my cookie from being removed?

Answer 1

Chrome doesn't support cookies on file:// and localhost uris. See this so question - Why does Chrome ignore local jQuery cookies?

Answer 2

You need to use the right datetime format for it to work. The following should do the trick

function clearCookie()
{
  document.cookie = 'myCookie=; expires='+new Date(0).toUTCString() +'; path=/myPath/';
}

And of course you need to specify the exact same path and&or domain specified on cookie creation.

Answer 3

You can clear a cookie in chrome, but you need to set the domain as well when creating the blank cookie to replace the current one.