拿到html中select下拉标签的选中值

 

 

js函数:

<script type="text/javascript">

      
       //获得html中下拉标签选中项
        function getVal() {

            var sel = document.getElementById("MySel");//拿到下拉控件
            alert(sel.options[sel.selectedIndex].value);//显示下拉控件的value值   
        }

</script> 




html中的下拉标签:


        <select name="cars" id="MySel">
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="fiat" selected="selected">Fiat</option>
                    <option value="audi">Audi</option>
         </select>