<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!-- 判断星期几 0~6 -->
<script>
var s=prompt('请输入0~6的数字');
var week=s-0;
switch (week) {
case 0:
console.log("星期天");
break;
case 1:
console.log("星期一");
break;
case 2:
console.log("星期二");
break;
case 3:
console.log("星期3");
break;
case 4:
console.log("星期四");
break;
case 5:
console.log("星期五");
break;
case 6:
console.log("星期六");
break;
default:
alert('请输入0~6的数字');
break;
}
</script>
</body>
</html>
