tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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custom-event.js (1001B)

      1 /**
      2 * @license
      3 * Copyright 2017 Google Inc.
      4 * SPDX-License-Identifier: Apache-2.0
      5 */
      6 
      7 'use strict';
      8 
      9 const puppeteer = require('puppeteer');
     10 
     11 (async () => {
     12  const browser = await puppeteer.launch();
     13  const page = await browser.newPage();
     14 
     15  // Define a window.onCustomEvent function on the page.
     16  await page.exposeFunction('onCustomEvent', e => {
     17    console.log(`${e.type} fired`, e.detail || '');
     18  });
     19 
     20  /**
     21   * Attach an event listener to page to capture a custom event on page load/navigation.
     22   * @param {string} type Event name.
     23   * @returns {!Promise}
     24   */
     25  function listenFor(type) {
     26    return page.evaluateOnNewDocument(type => {
     27      document.addEventListener(type, e => {
     28        window.onCustomEvent({type, detail: e.detail});
     29      });
     30    }, type);
     31  }
     32 
     33  await listenFor('app-ready'); // Listen for "app-ready" custom event on page load.
     34 
     35  await page.goto('https://www.chromestatus.com/features', {
     36    waitUntil: 'networkidle0',
     37  });
     38 
     39  await browser.close();
     40 })();