倒計時，時分秒分開

//取倒計時（天時分秒）
export const getTimeLeft = datetimeTo =>{
  // 計算目標與現在時間差（毫秒）
  let time1 = new Date(datetimeTo).getTime();
  let time2 = new Date().getTime();
  let mss = time1 - time2;
  // 將時間差（毫秒）格式爲：天時分秒
  let days = parseInt(mss / (1000 * 60 * 60 * 24));
  let hours = parseInt((mss % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  let minutes = parseInt((mss % (1000 * 60 * 60)) / (1000 * 60));
  let seconds = parseInt((mss % (1000 * 60)) / 1000);
  return days + "天" + hours + "時" + minutes + "分" + seconds + "秒"
  // return { hours, minutes, seconds}
}