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javascriptcookies

Clearing all cookies with JavaScript


How do you delete all the cookies for the current domain using JavaScript?


Solution

  • function deleteAllCookies() {
        document.cookie.split(';').forEach(cookie => {
            const eqPos = cookie.indexOf('=');
            const name = eqPos > -1 ? cookie.substring(0, eqPos) : cookie;
            document.cookie = name + '=;expires=Thu, 01 Jan 1970 00:00:00 GMT';
        });
    }
    

    Note that this code has two limitations:

    • It will not delete cookies with HttpOnly flag set, as the HttpOnly flag disables JavaScript's access to the cookie.
    • It will not delete cookies that have been set with a Path value. (This is despite the fact that those cookies will appear in document.cookie, but you can't delete it without specifying the same Path value with which it was set.)