JS日期时间戳/字符串格式相互转换

一、将字符串格式日期'YYYY-MM-DD'转为时间戳

var timeStamp = new Date('-11-30').getTime()//1638230400000

二、将时间戳转换为字符串格式日期'YYYY-MM-DD'

var date = new Date(timeStamp);//Tue Nov 30 08:00:00 GMT+0800var year = date.getFullYear();var month = date.getMonth() + 1;var day = date.getDate();if (month < 10) {month = "0" + month;}if (day < 10) {day = "0" + day;}var result = year + "-" + month + "-" + day;//'-11-30'