老师帮忙看一下
来源：2-14 switch语句
dy12369
2022-03-27 12:40:13
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>switch语句练习</title>
</head>
<body>
<script>
var year=Number(prompt("请输入年份"));
var month=Number(prompt("请输入月份"));
switch(month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
alert("这个月有31天");
break
case 4:
case 6:
case 9:
case 11:
alert("这个月有30天");
break
case 2:
if(year % 4 == 0 && year % 100 !== 0 || year % 100 == 0 && year % 400 == 0) {
alert("这个月有29天");
} else {
alert("这个月有28天");
}
break
default:
alert("你输入的月份有误");
}
</script>
</body>
</html>
1回答
-
好帮手慕慕子
2022-03-27
同学你好，代码实现是正确的，很棒！！！继续加油，祝学习愉快~
0
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