<meta charset="utf-8">
<html>
<head>
<script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.8.3/jquery.js"></script>
<script type="text/javascript">
//方法1 $
$(document).ready(function(){
$("button").click(function(){
var str = "";
$(".selected .userid").each(function(){
str += $(this).val() + ",";
});
alert(str);
});
});
//方法2 #
// jQuery(document).ready(function(){
// jQuery("button").click(function(){
// var id = "";
// jQuery(".selected .userid").each(function(){
// id += jQuery(this).val() + ",";
// });
// alert(id);
// });
// });
</script>
</head>
<body>
<button>输出每个列表项的值</button>
<ul>
<table>
<tr class="gradeX odd selected"><td><input class="userid" value="237" type="checkbox">237</td></tr>
<tr class="gradeX odd selected"><td><input class="userid" value="236" type="checkbox">236</td></tr>
</table>
</ul>
</body>
</html>
