<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>动态日期</title>
</head>
<script>
var today = new Date();//获取时间
var y=today.getFullYear();//截取年
var m=today.getMonth();//截取月份,返回0~11
var d=today.getDate();//截取日期
var w=today.getDay();//截取星期,返回0~6
var wd=new Array(" Sunday"," Monday"," Tuesday"," Wednesday"," Thursday"," Friday"," Saturday");//创建星期数组
document.write(today,"<br>","今天是",y,"年",m+1,"月",d,"日","(",wd[w],")");
</script>
<body>
</body>
</html>
效果展示: