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JavaScriptでHTMLを取得する

JavaScriptでHTMLを取得する

イベントハンドラ(body要素に記述)

<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
function getHtml(){
	window.alert(document.getElementById("first").innerHTML);
}
</script>
</head>
<body>
	<p id="first"><strong>取得するHTML</strong></p>
	<input type="button" value="取得" onclick="getHtml();">
</body>
</html>

イベントハンドラ(scriptタグ内に記述)

<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
window.onload = function(){
	document.getElementsByTagName("input")[0].onclick = function(){
		window.alert(document.getElementById("first").innerHTML);
	}
}
</script>
</head>
<body>
	<p id="first"><strong>取得するHTML</strong></p>
	<input type="button" value="取得">
</body>
</html>

イベントリスナ

<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
window.addEventListener("load",function(){
	document.getElementsByTagName("input")[0].addEventListener("click",function(){
		window.alert(document.getElementById("first").innerHTML);
	});
});
</script>
</head>
<body>
	<p id="first"><strong>取得するHTML</strong></p>
	<input type="button" value="取得">
</body>
</html>

jQueryのhtml関数

<!DOCTYPE html>
<html lang="ja-JP">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(function(){
	$("input").click(function(){
		window.alert($("#first").html());
	});
});
</script>
</head>
<body>
	<p id="first"><strong>取得するHTML</strong></p>
	<input type="button" value="取得">
</body>
</html>

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