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chikoski/jsbin.ibemot.html

Created October 30, 2013 22:23
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Raw
jsbin.ibemot.html
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
<p>
判定する年：
<input type="text" id="year" value="2013">
<input type="button" id="btn" value="判定する">
</p>
<p>
結果：
<span id="result"></span>
</p>
</body>
</html>
Raw
jsbin.ibemot.js
document.getElementById("btn").onclick = function(){
var y = 2013;
y = parseInt(document.getElementById("year").value, 10);
var o = document.getElementById("result");
if((y % 400 === 0 || (y % 4 === 0 && y % 100 !== 0))){
o.innerHTML = "閏年";
}else{
o.innerHTML = "平年";
}
};
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