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判断是平年还是闰年
雷国恩的博客
Original
1276 people have browsed it

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>	</title>
  <style type="text/css">
  	.box{width:310px;height:150px;border:1px solid red;margin:100px auto;padding:10px;}
  	h2{width:250px;height:20px;display: block;line-height: 20px;margin:0 auto;text-align:center;}
  </style>

  <script type="text/javascript">
     var number,text,jieguo;
  	 window.onload=function(){
  	 	text=document.getElementById('text');

  	 	jieguo=document.getElementById('jieguo');

  	 	}

  	 	function jisuan(){
  	 		var a=Number(text.value);
  	 		if(typeof(a)=="number"){
  	 			if(!isNaN(a)){
  	 				if((a%4==0 && a%100!=0) || a%400==0 ){	
	  	 				jieguo.innerHTML=a+"是闰年";
	  	 			}else{
		  	 			jieguo.innerHTML=a+"是平年";
		  	 		}
  	 			}else{		
  	 				jieguo.innerHTML="你输入的不是数字,请重新输入";
  	 			}	
  	 			
  	 		}
  	 		
        	
  	 }

  </script>
</head>
<body>
	<div class="box">
		<h2>判断是平年还是闰年</h2><br>
		<span>请输入年份:</span>
		<input id="text" type="text" value=""><input type="button" onclick="jisuan();" value="判断"><br>
		<span id="jieguo"></span>
	</div>
</body>
		
</html>

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Correction status：Uncorrected

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