tampermonkey-angularjs-documentation-hide-navigation.js

// ==UserScript==
// @name         Hide navbars in AngularJS docs
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  hide annoying parts in the AngularJS documentation
// @author       Tsvetomir Denchev
// @match        https://docs.angularjs.org/guide/*
// ==/UserScript==

(function() {
    'use strict';

    var header = document.getElementsByTagName('header')[0];

    header.remove();

    document.addEventListener('keydown', (event) => {
        const keyName = event.key;
        const gridLeft = document.getElementsByClassName('grid-left')[0];
        if (keyName === 'd') {
            if(gridLeft.style.display == "" || gridLeft.style.display == "none") {
                gridLeft.style.display = "block";
            } else {
                gridLeft.style.display = "none";
            }
        }
    });

    // Your code here...
})();