将MS转换为DD：HH：MM：SS

我想将时间转换为天，小时，分钟和秒，我已经找到了：

    String.prototype.toHHMMSS = function () {
      var sec_num = parseInt(this, 10); // don't forget the second param
      var hours = Math.floor(sec_num / 3600);
      var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
      var seconds = sec_num - (hours * 3600) - (minutes * 60);

      if (hours < 10) {hours = "0"+hours;}
      if (minutes < 10) {minutes = "0"+minutes;}
      if (seconds < 10) {seconds = "0"+seconds;}
      return days+':'+hours+':'+minutes+':'+seconds;
  }

但是我不知道当小时数比24小时优越时如何显示1天

谢谢！

如果大于24，您可以查看hours / 24的提示

 if (hours > 24) {
        days = (hours - hours % 24) / 24
        hours = hours % 24
   }