原文地址：http://www.cnblogs.com/shenyixin/archive/2012/12/11/2813221.html
原生JS方式:
<body>
<select name="PaymentType" style="110px" >
<option value="">请选择 </option>
<option value="001">月付</option>
<option value="002">半年付</option>
<option value="003">年付</option>
</select>
<script language="javascript">
function Gettext(obj){
var txt=obj.options[obj.options.selectedIndex].text;
alert(txt)
}
function Getvaule(obj){
var val=obj.options[obj.options.selectedIndex].value;
alert(val)
}
</script>
</body>
Jquery：
<body> <select name="PaymentType" style="110px" > <option value="">请选择 </option> <option value="001">月付</option> <option value="002">半年付</option> <option value="003">年付</option> </select> <script src="/jquery-1.11.1.js"></script> <script language="javascript"> function Gettext(obj){ var txt=$(obj).find("option:selected").text(); alert(txt) } function Getvaule(obj){ var val=$(obj).find("option:selected").val(); alert(val) } </script> </body>