js和Jquery获取选中select值和文本

JS中：

 1 <body>
 2 <select name="PaymentType" style="110px" > 
 3 <option value="">请选择 </option> 
 4 <option value="001">月付</option> 
 5 <option value="002">半年付</option> 
 6 <option value="003">年付</option> 
 7 </select> 
 8 <script language="javascript">
 9 function Gettext(obj){
10 var txt=obj.options[obj.options.selectedIndex].text;
11 alert(txt)
12 }
13 function Getvaule(obj){
14 var val=obj.options[obj.options.selectedIndex].value;
15 alert(val)
16 }
17 </script>
18 </body>

jQuery中：

<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=$(obj).find("option:selected").text();
alert(txt)
}
function Getvaule(obj){
var val=$(obj).find("option:selected").val();
alert(val)
}
</script>
</body>