UserScript to make docs.microsoft.com display always the en-us URL

docsmsftlang-userscript.js

// ==UserScript==
// @name         docs.microsoft.com always en-us
// @namespace    http://calnus.com
// @version      0.1
// @description  Sets the docs.microsoft.com URL to en-us
// @author       Carlos Milán Figueredo
// @match        https://docs.microsoft.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var urlPath = window.location.pathname;
    if (urlPath.indexOf('en-us') == -1) {
        var urlLanguage=urlPath.split('/')[1];
        var newPath=urlPath.replace(urlLanguage,'en-us');
        window.location.replace(window.location.protocol + '//'
               + window.location.hostname
               + newPath);
    }
})();