JavaScript将时间戳转换为年月日时分秒格式的方法

var time = new Date(时间戳);
//得到Thu May 11 2023 15:22:41 GMT+0800 (中国标准时间)
//这种样式的时间但是不是我们想要的所以要继续处理

var y=time.getFullYear();//返回年份
//getMonth方法从 Date 对象返回月份 (0 ~ 11)，返回结果需要手动加一var d = time.getDate();
// getDate方法从 Date 对象返回一个月中的某一天 (1 ~ 31)
var M=time.getMonth()+1;
var d=time.getDate();
var h=time.getHours();
var m = time.getMinutes(); 
var s = times.getSeconds();

var times = y + '-' + M + '-' + d + ' ' + h + ':' + m + ':' + s
//得到这种格式2023-5-11 15:32:29

if (M <= 9) {
	M = '0' + M
}
if (d <= 9) {
	d = '0' + d
}
if (h <= 9) {
	h = '0' + h
}
if (m <= 9) {
	m = '0' + m
}
if (s <= 9) {
	s = '0' + s
}
//得到这种格式2023-05-11 15:35:35

	getYMDHMS (timestamp) {
      let time = new Date(timestamp)
      let year = time.getFullYear()
      let month = time.getMonth() + 1
      let date = time.getDate()
      let hours = time.getHours()
      let minute = time.getMinutes()
      let second = time.getSeconds()

      if (month < 10) { month = '0' + month }
      if (date < 10) { date = '0' + date }
      if (hours < 10) { hours = '0' + hours }
      if (minute < 10) { minute = '0' + minute }
      if (second < 10) { second = '0' + second }
      return year + '-' + month + '-' + date + ' ' + hours + ':' + minute + ':' + second
    }
  
  // 使用es6的padStart()方法来补0
  getYMDHMS (timestamp) {
      let time = new Date(timestamp)
      let year = time.getFullYear()
      const month = (time.getMonth() + 1).toString().padStart(2, '0')
      const date = (time.getDate()).toString().padStart(2, '0')
      const hours = (time.getHours()).toString().padStart(2, '0')
      const minute = (time.getMinutes()).toString().padStart(2, '0')
      const second = (time.getSeconds()).toString().padStart(2, '0')

      return year + '-' + month + '-' + date + ' ' + hours + ':' + minute + ':' + second
    }