In JS, how to remove all cookies and disable them?

For situations, like, for example, a user withdraws their consent to use cookies, you can delete all existing cookies:

function deleteCookies() {
    var theCookies = document.cookie.split(';');
    for (var i = 0 ; i < theCookies.length; i++) {
        document.cookie = theCookies[i].split('=')[0] + '=; path=/; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
    }
}

And then disable them by overriding a getter and setter:

if(!document.__defineGetter__) {
Object.defineProperty(document, 'cookie', {
    get: function(){return ''},
    set: function(){return true},
});
} else {
    document.__defineGetter__("cookie", function() { return '';} );
    document.__defineSetter__("cookie", function() {} );
}