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Youtube like/dislike video and skip ad keyboard shortcuts

Adds keyboard shortcuts [ and ] for liking and disliking videos, and s for skipping pre-video and banner ads.

  1. // ==UserScript==
  2. // @name        Youtube like/dislike video and skip ad keyboard shortcuts
  3. // @namespace   nerevar009
  4. // @include     https://www.youtube.com/*
  5. // @description Adds keyboard shortcuts [ and ] for liking and disliking videos, and s for skipping pre-video and banner ads.
  6. // @version     1.1
  7. // @grant       none
  8. // ==/UserScript==
  9.  
  10.  
  11. var onvideopage, skipad, skipbannerad, videoinfo, buttons, like, dislike, tag;
  12.  
  13. function findButtons() {
  14.   if(!/^\/watch/.test(location.pathname)) {
  15.     onvideopage = false;
  16.     return;
  17.   }
  18.   onvideopage = true;
  19.  
  20.   skipad = document.getElementsByClassName("videoAdUiSkipButton");
  21.   if(skipad.length == 1)
  22.     skipad = skipad[0];
  23.   else skipad = null;
  24.  
  25.   skipbannerad = document.getElementsByClassName("close-padding");
  26.   if(skipbannerad.length == 1)
  27.     skipbannerad = skipbannerad[0];
  28.   else skipbannerad = null;
  29.   
  30.   videoinfo = document.getElementsByTagName("ytd-video-primary-info-renderer");
  31.   if(videoinfo.length == 1) {
  32.     buttons = videoinfo[0].getElementsByTagName("button");
  33.     like = buttons[0];
  34.     dislike = buttons[1];
  35.   }
  36.   else {
  37.     like = null;
  38.     dislike = null;
  39.   }
  40. }
  41.  
  42. findButtons();
  43. var observer = new MutationObserver(findButtons);
  44. observer.observe(document.documentElement, {childList: true, subtree: true});
  45.  
  46. // add keybindings
  47. addEventListener("keypress", function(e) {
  48.   if(!onvideopage)
  49.     return;
  50.  
  51.   if(e.target.getAttribute("contenteditable") == "true")
  52.     return;
  53.  
  54.   tag = e.target.tagName.toLowerCase();
  55.   if(tag == "input" || tag == "textarea")
  56.     return;
  57.  
  58.   if(e.code == "BracketLeft" && like)
  59.     like.click();
  60.   else if(e.code == "BracketRight" && dislike)
  61.     dislike.click();
  62.   else if(e.code == "KeyS") {
  63.     if(skipad)
  64.       skipad.click();
  65.     else if(skipbannerad)
  66.       skipbannerad.click();
  67.   }
  68. });
  69.