08.html

来自「希望大家多多交流」· HTML 代码 · 共 40 行

HTML
40
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>
</html>

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