SOURCE

function write(string){
    document.write(string+"<br>")
}

var otoday=new Date()
write(otoday)
write("年:"+otoday.getFullYear())
write("月:"+otoday.getMonth()+1)
write("日:"+otoday.getDate())
write("时:"+otoday.getHours())
write("分:"+otoday.getMinutes())
write("秒:"+otoday.getSeconds())
document.write("<br>")

var omybirthday =new Date()
omybirthday.setFullYear(2019)
omybirthday.setMonth(3)
omybirthday.setDate(1)
omybirthday.setHours(12)
omybirthday.setMinutes(22)
omybirthday.setSeconds(2)
write(omybirthday)
document.write("<br>")

var week=["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];
write("今天是"+week[otoday.getDay()])

var odate=new Date(2022,3,22,8,55)
write(odate)