Halo博客页脚添加显示运行时间

在设置里的代码处，页脚处的位置添加代码即可。

<div id="timer"></div>

<script>
  function startTimer(fromDate, element) {
    function update() {
      const now = new Date();
      let diff = Math.floor((now - fromDate) / 1000); // 秒数差
      
      const year = 365 * 24 * 3600;
      const month = 30 * 24 * 3600;
      const day = 24 * 3600;
      const hour = 3600;
      const minute = 60;
      
      const y = Math.floor(diff / year);
      diff %= year;
      const m = Math.floor(diff / month);
      diff %= month;
      const d = Math.floor(diff / day);
      diff %= day;
      const h = Math.floor(diff / hour);
      diff %= hour;
      const min = Math.floor(diff / minute);
      const s = diff % minute;
      
      let str = '感谢陪伴: ';
      if (y > 0) str += y + '年';
      if (m > 0 || y > 0) str += m + '月';
      if (d > 0 || m > 0 || y > 0) str += d + '日';
      if (h > 0 || d > 0 || m > 0 || y > 0) str += h + '时';
      str += min + '分' + s + '秒';
      
      element.textContent = str;
    }
    
    update();
    setInterval(update, 1000);
  }
  
  const from = new Date('2021-09-11T00:00:00');
  const el = document.getElementById('timer');
  startTimer(from, el);
</script>