How can I use JavaScript to clear cookies for the current domain?

General Discussions
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1

I’m trying to remove all cookies on the current domain using JavaScript clear cookies logic.

What’s the safest and most reliable way to do this across modern browsers?

2

JavaScript has no built-in function to delete all cookies at once, but you can loop through them and set their expiry to the past:

document.cookie.split(";").forEach(cookie => {
  const name = cookie.split("=")[0].trim();
  document.cookie = `${name}=;expires=Thu, 01 Jan 1970 00:00:00 GMT;path=/`;
});
3

Some cookies may be set with specific paths or domains, so to thoroughly clear them:

function deleteAllCookies() {
  document.cookie.split(";").forEach(cookie => {
    const name = cookie.split("=")[0].trim();

    // Try deleting with common paths
    const paths = ["/", window.location.pathname];
    paths.forEach(path => {
      document.cookie = `${name}=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=${path};`;
    });
  });
}
4

If you’re just prototyping and don’t care about precision:

document.cookie = "";

This won’t clear existing cookies but can prevent further issues in a testing context.