📄 08.html
字号:
<html>
<head>
<title>switch分支语句</title>
</head>
<body>
switch分支语句：<br>
<script language="JavaScript">
var month = window.prompt("请输入月份（1~12）","");
document.write(month);
var total = 0;
switch(month){
case "1":
case "3":
case "5":
case "7":
case "8":
case "10":
case "12":
total = 31;
break;
case "4":
case "6":
case "9":
case "11":
total = 30;
break;
case "2":
var year = window.prompt("2月份的天数与年份有关，请继续输入年份","2008");
if((year%4 == 0 && year%100!=0) || year%400 == 0)
total = 29;
else
total = 28;
break;
default:
total = -1;
}
document.write("月份总天数为：" + total);
</script>
</body>
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