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<select name="d1" id="d1">
<option value="50" selected>A</option>
<option value="60">B</option>
<option value="70">C</option>
</select>
function selectedValue()
{
alert(document.getElementById("d1").value)
}
示例1:
<select name="d1" id="d1" onChange="javascript:alert('你选择的是:'+this.options[this.selectedIndex].innerText+',值是:'+this.options[this.selectedIndex].value);">
<option value="50" selected>A</option>
<option value="60">B</option>
<option value="70">C</option>
</select>
<br />
示例2:
<form name="form1" action="" method="post">
<select name="d1" id="d1" onChange="javascript:form1.submit();">
<option value="">--请选择--</option>
<option value="50">A</option>
<option value="60">B</option>
<option value="70">C</option>
</select>
</form>
<%
dim d1,a '定义一个变量就够了,没必要a,b,c
d1=trim(request.form("d1"))
if d1<>"" then
select case d1
case "50"
a="A"
case "60"
a="B"
case "70"
a="C"
end select
response.write("你选择的是:"&a)
end if
%>
d1 = request("d1")
select d1
case 50
...
case 60
...
case 70
...
end select