SOURCE

//(  )
let ts = new Date()
console.log(ts,typeof ts)

//（value）
let time = new Date(1659141081324)
console.log(time,typeof time)

//无new关键字
let now = Date()
console.log(now,typeof now)

//（年月日时分秒）
let birthday = new Date(1995,1,1,12,35,40);
console.log(birthday)

//getDate（）1-31
console.log(ts.getDate())

//getDay()0~6 ,0表示星期天
console.log(ts.getDay())

var ms;
Today = new Date();
ms = Today.getMilliseconds();
console.log(ms)