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YouTube add to Watch Later shortcut

Simply Alt-Click a video in the YouTube recommendations to immediately add it to Watch Later.

  1. // ==UserScript==
  2. // @name        YouTube add to Watch Later shortcut
  3. // @namespace   https://greasyfork.org/en/users/1436613-gosha305
  4. // @match       https://www.youtube.com/*
  5. // @license     MIT
  6. // @version     1.0
  7. // @author      gosha305
  8. // @description Simply Alt-Click a video in the YouTube recommendations to immediately add it to Watch Later.
  9. // ==/UserScript==
  10.  
  11.  
  12. document.addEventListener("click", function(event){
  13.   if (event.altKey) {
  14.     event.preventDefault()
  15.     event.stopImmediatePropagation();
  16.     clickOnWatchLater(findVideoContainer(event.target))
  17.   }
  18. }, true)
  19.  
  20. function findVideoContainer(target){
  21.   return (target.closest("#dismissible") || document.querySelector(`[href=\'${target.closest("#media-container-link").getAttribute("href")}\']`).closest("#dismissible"))
  22. }
  23.  
  24. function clickOnWatchLater(element){
  25.   (new MutationObserver(function(_,observer){
  26.     const watchLaterButton = document.querySelector("ytd-popup-container ytd-menu-service-item-renderer:nth-of-type(2)");
  27.     if (watchLaterButton){
  28.       watchLaterButton.click()
  29.       observer.disconnect()
  30.     }
  31.   })).observe(document.querySelector("ytd-popup-container"), {subtree: true, attributes:true})
  32.   element.querySelector("#button.ytd-menu-renderer > button").click()
  33. }