Prototype-form-element-serialize
提供：Dev Guides
プロトタイプ-Form.Element serialize（）メソッド
このメソッドは、name = value形式でフォームコントロールのURLエンコードされた文字列表現を作成します。
構文
formElement.serialize();戻り値
文字列を返します。
例
<html>
<head>
<title>Prototype examples</title>
<script type = "text/javascript" src = "/javascript/prototype.js"></script>
<script>
function showResult() {
var form = $('example');
var element = form.serialize();
alert("form.serialize() : " + element.inspect());
}
</script>
</head>
<body>
<p>Click the button to see the result.</p>
<br/>
<form id = "example" action = "#" onsubmit = "return false">
<fieldset>
<legend>User info</legend>
<div>
<label for = "username">Username:</label>
<input name = "username" id = "username" value = "Sulien" type = "text">
</div>
<div>
<label for = "age">Age:</label>
<input name = "age" id = "age" value = "23" size = "3" type = "text">
</div>
<div>
<label for = "hobbies">Your hobbies are:</label>
<select name = "hobbies" id = "hobbies" multiple = "multiple">
<option>coding</option>
<option>swimming</option>
<option>hiking</option>
<option>drawing</option>
</select>
</div>
</fieldset>
</form>
<br/>
<input type = "button" value = "Result" onclick = "showResult();"/>
</body>
</html>