js时间戳转成年月日时分秒

function timestampToDateTime(timestamp) {
  const date = new Date(timestamp);
  const year = date.getFullYear();
  const month = date.getMonth() + 1; // 月份从0开始，所以需要加1
  const day = date.getDate();
  const hours = date.getHours();
  const minutes = date.getMinutes();
  const seconds = date.getSeconds();

  // 格式化输出，补零操作
  const formattedMonth = month < 10 ? '0' + month : month;
  const formattedDay = day < 10 ? '0' + day : day;
  const formattedHours = hours < 10 ? '0' + hours : hours;
  const formattedMinutes = minutes < 10 ? '0' + minutes : minutes;
  const formattedSeconds = seconds < 10 ? '0' + seconds : seconds;

  return `${year}-${formattedMonth}-${formattedDay} ${formattedHours}:${formattedMinutes}:${formattedSeconds}`;
}

// 示例用法
const timestamp = 1633072800000; // 这是一个示例时间戳
const dateTime = timestampToDateTime(timestamp);
console.log(dateTime); // 输出格式化的日期时间字符串，例如 "2021-10-01 12:00:00"