The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 function parseQueryString() {

   let url = document.documentURI;

   let queryString = url.replace(/^about:tabcrashed?e=tabcrashed/, "");

   let urlMatch = queryString.match(/u=([^&]+)/);

   let url = urlMatch && urlMatch[1] ? decodeURIComponent(urlMatch[1]) : "";

   let titleMatch = queryString.match(/d=([^&]*)/);

   title = titleMatch && titleMatch[1] ? decodeURIComponent(titleMatch[1]) : "";

   return [url, title];

 }

 let [url, title] = parseQueryString();

 document.title = title;

 document.getElementById("tryAgain").setAttribute("url", url);