Hide the notification bell on the elearning platform

ElearningNotificationHider.js

// ==UserScript==
// @name         Elearning Notification Hider
// @namespace    Piepmatz
// @version      1.0.0
// @description  Hide the notification bell on the elearning platform
// @author       Tim 'Piepmatz' Hesse
// @grant        none
// @include      https://elearning.uni-oldenburg.de/*
// @run-at       document-end
// @downloadURL  https://gist.github.com/derPiepmatz/7fd138358c215cb57c657bbad3273bc5/raw
// ==/UserScript==

(function() {
    'use strict';

    document.getElementById("notification_container").hidden = true;
    document.getElementById("nav_messaging").firstElementChild.setAttribute("data-badge", "0");
    document.getElementById("nav_start").firstElementChild.setAttribute("data-badge", "0");
})();