File: aboutTabCrashed.js

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/* 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);