今天凌晨=new Date(new Date().setHours(0, 0, 0, 0)) //在转换成年月日 就是今天的凌晨
年,月,日,时,分,秒
new Date().getFullYear() //年
new Date().getMonth()+1 //月
new Date().getDate() //日
new Date().getHours() //时
new Date().getMinutes() //分
new Date().getSeconds() //秒
几天前
new Date(funydate(-6)) //6天前
```javascript
//毫秒的获取
let a = Date.now();
console.log(a);
let b = new Date().getTime()
console.log(b);
function funydate(num) {
var date1 = new Date();
//今天时间
var time1 = date1.getFullYear() + ‘-’ + (date1.getMonth() + 1) + ‘-’ + date1.getDate();
console.log(time1);
var date2 = new Date(date1);
date2.setDate(date1.getDate() + num);
//num是正数表示之后的时间,num负数表示之前的时间,0表示今天
var time2 = date2.getFullYear() + ‘-’ + (date2.getMonth() + 1) + ‘-’ + date2.getDate();
console.log(time2);
return time2;
}
```javascript
//时间转换
function formatDateTime(date) {
var y = date.getFullYear();
var m = date.getMonth() + 1;
m = m < 10 ? "0" + m : m;
var d = date.getDate();
d = d < 10 ? "0" + d : d;
var h = date.getHours();
h = h < 10 ? "0" + h : h;
var minute = date.getMinutes();
minute = minute < 10 ? "0" + minute : minute;
var second = date.getSeconds();
second = second < 10 ? "0" + second : second;
// return y + "-" + m + "-" + d;
return y + "-" + m + "-" + d + " " + h + ":" + minute + ":" + second;
},