JS怎样写闰年 

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
</html>
<script type="text/javascript">
	var runNian = parseInt(prompt("请输入年份"))
	if(runNian%4 == 0 && runNian%100 !== 0 || runNian%400 ==0 )	{
		alert("闰年")
	}
	else{
		alert("不是闰年")
	}

</script>

 

posted @ 2018-04-09 16:36  韩凯  阅读(182)  评论(0)  编辑  收藏  举报