<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>js登录界面演示</title>
</head>
<body>
</body>
<script>
var now = new Date(); //获取系统日期
var day = now.getDay(); //获取星期
var week;
switch (day){
case 1:
alert("星期1");
break;
case 2:
alert("星期2");
break;
case 3:
alert("星期3");
break;
case 4:
alert("星期4");
break;
case 5:
alert("星期5");
break;
case 6:
alert("星期6");
break;
default:
alert("星期日");
break;
}
</script>
</html>