<select id="mySelect" name="">
<option value="111">111</option>
<option value="222">222</option>
<option value="333">333</option>
</select>
<script type="text/javascript">
$(document).ready(function(){
$(‘#mySelect‘).change(function(){
var p1=$(this).children(‘option:selected‘).val();//这就是selected的值
});
});
</script>
原文:http://www.cnblogs.com/aishangliming/p/6629413.html