js分秒格式转时分秒

minSsToHourMinSs(str){
  // str 格式为 min:ss (160:59)
  let arr = str.split(':');
  let hour = parseInt(arr[0] / 60);
  let min = arr[0] - (hour * 60);
  let ss = arr[1];
  // 补0
  hour = hour < 10 ? `0${hour}` : hour
  min = min < 10 ? `0${min}` : min
  ss = ss < 10 ? `0${ss}` : ss
  let time = `${hour}:${min}:${ss}`;
  return time
}