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YouTube Mobile Background Playback (Firefox Android)

Enable YouTube background playback in Firefox for Android

  1. // ==UserScript==
  2. // @name        YouTube Mobile Background Playback (Firefox Android)
  3. // @description Enable YouTube background playback in Firefox for Android
  4. // @namespace   http://tampermonkey.net/
  5. // @match       *://m.youtube.com/*
  6. // @match       *://*.youtube-nocookie.com/*
  7. // @grant       none
  8. // @version     1.0
  9. // @run-at      document-end
  10. // @icon        https://www.google.com/s2/favicons?sz=64&domain=youtube.com
  11. // @author      -
  12. // ==/UserScript==
  13.  
  14. 'use strict';				   
  15. const lactRefreshInterval = 5 * 60 * 1000; // 5 minutes
  16. const initialLactDelay = 1000;
  17.  
  18. // Page Visibility API
  19. Object.defineProperties(document, { 'hidden': { value: false }, 'visibilityState': { value: 'visible' } });
  20. window.addEventListener('visibilitychange', e => e.stopImmediatePropagation(), true);
  21. // _lact stuff
  22. function waitForYoutubeLactInit(delay = initialLactDelay) {
  23.   if (window.hasOwnProperty('_lact')) { 
  24. 	window.setInterval(() => { window._lact = Date.now(); }, lactRefreshInterval); 
  25.   }
  26.   else{ 
  27.     window.setTimeout(() => waitForYoutubeLactInit(delay * 2), delay); 
  28.   }
  29. }
  30. waitForYoutubeLactInit();