JavaScript日期Data

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>

var date_obj= new Date();
alert(date_obj.toLocaleString())

// var date_obj2= new Date("2016 3 23 12:20");
// alert(date_obj2.toLocaleString())

// var date_obj3= new Date(50000000);
// alert(date_obj3.toLocaleString())
// alert(date_obj3.toUTCString())

function getTime() {

var date_obj= new Date();
// console.log(date_obj.getFullYear());
// console.log(date_obj.getMonth());
// console.log(date_obj.getDate());
// console.log(date_obj.getDay());
// console.log(date_obj.getHours());
// console.log(date_obj.getMinutes());
// console.log(date_obj.getSeconds());
// console.log(date_obj.getHourMinuteSecond);
// console.log(date_obj.getMilliseconds());
var year=date_obj.getFullYear();
var month=date_obj.getMonth()+1;
var day=date_obj.getDate();
var hour=date_obj.getHours();
var minute=date_obj.getMinutes();
var seconds=date_obj.getSeconds();
var week=date_obj.getDay();

return year+"年"+month+"月"+f(day)+"日"+" "+hour+": "+minute+" :"+seconds+" "+num_week(week)
}
//Date方法：
alert(getTime());

function f(num) {
if (num<10){
return "0"+num;
}
return num;
}
function num_week(n) {
week=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]
return week[n]
}

// 2018年 11月 08日 15：02 星期二

var date_obj= new Date();
alert(date_obj.getTimezoneOffset())　　　　//返回格林威治时间和本地时间之间的时差：

</script>
</body>
</html>