将毫秒数述转为时分秒格式

function formatSecondToHHmmss(time) {
 time = Number(time);
  if (time < 0) time = 0;
  let str = ''

  const secs = Math.floor(time / 1000);
  const sec = Math.floor(secs % 60);
  const mins = Math.floor(secs / 60);
  const min = Math.floor(mins % 60);
  const hour = Math.floor(mins / 60);

  str = `${fixedTwo(hour)}:${fixedTwo(min)}:${fixedTwo(sec)}`;

  return str;
}
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console.log(formatSecondToHHmmss(75000)) // 00:01:15
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