js把时间戳转化为日期格式

// 假设有一个时间戳
let timestamp = 1633072800000; // 这个时间戳代表2021-10-01 00:00:00 UTC

// 创建一个Date对象
let date = new Date(timestamp);

// 输出日期字符串
console.log(date.toString()); // 输出类似于"Fri Oct 01 2021 08:00:00 GMT+0800 (中国标准时间)"

function formatDate(timestamp) {
    let date = new Date(timestamp);
    let year = date.getFullYear();
    let month = ('0' + (date.getMonth() + 1)).slice(-2); // 月份从0开始，需要加1
    let day = ('0' + date.getDate()).slice(-2);
    let hours = ('0' + date.getHours()).slice(-2);
    let minutes = ('0' + date.getMinutes()).slice(-2);
    let seconds = ('0' + date.getSeconds()).slice(-2);

    return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
}

let timestamp = 1633072800000;
console.log(formatDate(timestamp)); // 输出"2021-10-01 08:00:00"

let timestamp = 1633072800000;
let date = new Date(timestamp);
console.log(date.toLocaleString()); // 输出格式依赖于用户的本地设置，例如"2021/10/1 上午8:00:00"

// 需要先引入moment.js库
let moment = require('moment');

let timestamp = 1633072800000;
console.log(moment(timestamp).format('YYYY-MM-DD HH:mm:ss')); // 输出"2021-10-01 08:00:00"

// 需要先引入date-fns库
let { format } = require('date-fns');

let timestamp = 1633072800000;
console.log(format(new Date(timestamp), 'yyyy-MM-dd HH:mm:ss')); // 输出"2021-10-01 08:00:00"