<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="/jquery/js/jquery.js"></script>
<script>
$(document).ready(function(){
$("input:enabled").val("this is it");
});
</script>
</head>
<body>
<form>
<input name="email" disabled="disabled" />
<input name="id" />
</form>
</body>
</html>
[実行結果]
[フレーム]