document.getElementById('login').addEventListener('click', () => {
    if (!isLogged) {
        $('#login-background').css('display', 'block');
    } else {
        $('#login').html('Login');
        $('#user-div').html('');
        isLogged = false;
        $('#logout-form').submit(function(e) {
            e.preventDefault();
            $.ajax({
                type: $form.attr('method'),
                url: $form.attr('action'),
                data: loggedUser.id,
            }).done(function(data) {
                console.log(data);
            }).fail(function() {
                console.log('fail');
            });
        });
        loggedUser.id = 0;
        loggedUser.login = "";
    }
})