完整测试代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery遍历同id元素，并响应消息</title>
<script language="javascript" src="http://demo.glzy8.com/jslib/jquery/jquery-1.7.2.min.js"></script>
<script language="javascript">
$(document).ready(function(){
$("[id=test]").each(function(){
$(this).click(function(){
$(this).val('被单击');
alert('触发了单击消息!');
});
});
});
</script>
</head>
<body>
<label for="test"></label>
<input type="text" name="test" id="test" />
<br /><br />
<label for="test"></label>
<input type="text" name="test" id="test" />
</body>
</html>