text: document.addEventListener('DOMContentLoaded', () => {
    var intervalCountdown = 0;
    var intervalId = setInterval(() => {
      var tbAd = document.getElementsByClassName('toolbar-advert');
      if (tbAd !== undefined && tbAd.length > 0) {
        tbAd[0].style.display = 'none';
        console.log('已经帮你关掉恶心的广告了!');
        clearInterval(intervalId);
        return;
      }
      // console.log('每隔一段时间查找一次...');
      intervalCountdown++;
  
      if (intervalCountdown >= 20) clearInterval(intervalId);
    }, 500);
  });
  