<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
var currentDate = new Date();
currentDate.setFullYear(2019,0,6)
currentDate.setMonth(2,19)
currentDate.setMonth(3)
alert(currentDate.getFullYear())
alert(currentDate.getMonth())
alert(currentDate.getDate())
alert(currentDate.getHours()+':'+currentDate.getMinutes()+':'+currentDate.getSeconds())
// 运算符 + 的用法
alert(currentDate.getHours()+''+currentDate.getMinutes()+''+currentDate.getSeconds())
// 获得星期
alert(currentDate.getDay())
// 2018-04-08 星期五 10;45:45
</script>
</body>
</html>