js时间戳怎么转成日期格式

// 假设我们有一个时间戳
const timestamp = 1633072800000; // 这个时间戳代表2021-10-01 00:00:00 UTC

// 创建Date对象
const date = new Date(timestamp);

// 获取各个时间单位
const year = date.getFullYear();
const month = ('0' + (date.getMonth() + 1)).slice(-2); // 月份是从0开始的，所以需要+1
const day = ('0' + date.getDate()).slice(-2);
const hours = ('0' + date.getHours()).slice(-2);
const minutes = ('0' + date.getMinutes()).slice(-2);
const seconds = ('0' + date.getSeconds()).slice(-2);

// 拼接成日期字符串
const formattedDate = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;

console.log(formattedDate); // 输出: "2021-10-01 00:00:00"

const timestamp = 1633072800000;
const date = new Date(timestamp);
const formattedDate = date.toLocaleString(); // 根据用户的本地设置格式化日期

console.log(formattedDate); // 输出可能是 "2021/10/1 上午12:00:00"，具体格式取决于用户的浏览器和操作系统设置

// 首先需要引入moment.js库
const moment = require('moment');

const timestamp = 1633072800000;
const formattedDate = moment(timestamp).format('YYYY-MM-DD HH:mm:ss');

console.log(formattedDate); // 输出: "2021-10-01 00:00:00"

// 首先需要引入date-fns库
const { format } = require('date-fns');

const timestamp = 1633072800000;
const formattedDate = format(new Date(timestamp), 'yyyy-MM-dd HH:mm:ss');

console.log(formattedDate); // 输出: "2021-10-01 00:00:00"