<!DOCTYPE html>
<html>
<head>
<title>test_20171025.html</title>
<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript">
function getMyYear(){
var zz = /^[0-9]*$/
// 獲取數據
var value = document.getElementById("year").value;
// 計算數據
if(zz.test(value)){
if((value % 4 == 0 && value % 100 != 0) || value % 400 == 0){
alert(value + "是閏年");
}else{
alert(value + "不是閏年");
}
}else{
alert("輸入有誤");
}
}
</script>
</head>
<body>
<input type="text" name="year" id="year"/><input type="button" value="計算" οnclick="getMyYear()"/>
</body>
</html>
