html:
```
<span class="select-box" style="width: 120px">
<select class="select" id="audit" >
<option value="0">選擇審款結果</option>
<option value="2">未審款訂單</option>
<option value="1">已審款訂單</option>
<option value="3">已拒絕訂單</option>
</select>
</span>
```
js:
var audit=$("#audit option:selected").val(); //獲取選中的項