Bookmarklet: Clear videos from YouTube Watch Later in bulk

bookmarklet-youtube-clear-watch-later.js

javascript:(() => {
  const timeout = 500;
  let clickTimeout = timeout;
  const buttons = document.querySelectorAll('.pl-video-edit-remove');
  
  for (let button of buttons) {
    setTimeout(() => {
      console.group(button);
      setTimeout(() => { button.click(); }, timeout);
      console.groupEnd();
    }, clickTimeout += timeout);
  }
})();

Use on: https://www.youtube.com/playlist?list=WL&disable_polymer=true