Clear Youtube watch later list

clear-youtube-watch-later.js

/* copy and paste below in web browser console
 * source: https://www.reddit.com/r/youtube/comments/2jfdzf/how_to_remove_all_videos_from_watch_later/cof5cbb */

function d(){
   var el = document.getElementsByClassName('pl-video-edit-remove');
   if (el.length > 0) {
      el[el.length-1].click();
      setTimeout(d,300);
   }
}
d();