jQuery弹出select选择

    <script src="jquery-1.9.1.js"></script>    

<script type="text/javascript">

        $(function () {            

            $('#btn').click(function () {             

                alert($('#s option:selected').val());      

       })      

})   

  </script>

< /head>

< body>    

<select id="s" multiple="multiple">        

<option value="1">商</option>       

  <option value="2">炳</option>        

<option value="3">奇</option>    

</select>    

<input type="button" id="btn" value="获取" /><br />

< /body>