for http://listenonrepeat.com/

youtuberepeat-24miniutes-stop.js

window.$ = $;
$(function(){
  var LIMIT = 24; // この分数経ったら止める
  setInterval(function(){
    // 再生開始の監視
    if(!$('.control-play-pause').find('i').hasClass('mdi-av-play-arrow')){ // 再生中
      if(!parseInt(localStorage.getItem('starttime'))){
        console.log("START!");
        localStorage.setItem('starttime', new Date().getTime());
      }
    }
    else{
      localStorage.setItem('starttime', 0);
    }

    // 停止時間の監視
    if(!$('.control-play-pause').find('i').hasClass('mdi-av-play-arrow')){ // 再生中
      var elapsedMinutes = (new Date().getTime() - parseInt(localStorage.getItem('starttime'))) / 1000 / 60;
      console.log("elapsedMinutes = " + elapsedMinutes);
      if(elapsedMinutes >= LIMIT){
          localStorage.setItem('starttime', 0);
          $('.control-play-pause').click();
      }
    }
  }, 1000);
});