select结合onchange事件实现功能实例

Question

我主要是要获取在onchange参数值中获取option value

Answer 1

试试看这个样例能否解答你的问题？
<script language="javascript">
function showMsg(obj) {
var opt = obj.options[obj.selectedIndex]
alert("The option you select is:"+opt.text+"("+opt.value+")");
}
</script>
<SELECT name="mySelect" id="mySelect" onchange="showMsg(this)">
<OPTION value ="1">风</OPTION>
<OPTION value="2">雨</OPTION>
<OPTION value ="3">雷</OPTION>
<OPTION value="4">电</OPTION>
</SELECT>

Answer 2

<SELECT name="clientType" id="clientType" onchange="javascript:openClient()">
<OPTION selected="selected">-请选择- </OPTION>
<OPTION value ="1">个人 </OPTION>
<OPTION value="2">公司</OPTION>
</SELECT>

Answer 3

<script language="javascript">
function show(o)
{
var option = o.options[o.selectedIndex];
alert(option.value);
}
</script>