js毫秒数转时间

function convertMilliseconds(milliseconds) {
  const date = new Date(milliseconds);
  const year = date.getFullYear();
  const month = date.getMonth() + 1; 
  const day = date.getDate();
  const hours = date.getHours();
  const minutes = date.getMinutes();
  const seconds = date.getSeconds();

  return `${year}-${month < 10? '0' + month : month}-${day < 10? '0' + day : day} ${hours < 10? '0' + hours : hours}:${minutes < 10? '0' + minutes : minutes}:${seconds < 10? '0' + seconds : seconds}`;
}

const millis = 1677451877000;
console.log(convertMilliseconds(millis));