Get RadioButtonList 's selected value in js

[mg]

After a selection is made in the following RadioButtonList

<asp:RadioButto nList id="RadioButton List1" runat="server">
<asp:ListItem Value="Y"></asp:ListItem>
<asp:ListItem Value="N"></asp:ListItem>
</asp:RadioButton List>
the following script [in a client-side CustomValidator]
returns null, not "Y" or "N"

<script language="javas cript">
q = document.getEle mentById
("RadioButtonLi st1").getAttrib ute("SelectedVa lue")
alert(q)
</script>

Can you tell me what I'm doing wrong?

[Munsifali Rashid]

As far as I know, you can't get the selected value of a radio button
directly. You need to iterate through each item in the group, until you
find the selected item, and then get its value. An example of how to do
this is below:

<script language="javas cript">
function GetVal()
{
var a = null;
var f = document.forms[0];
var e = f.elements["RadioButtonLis t1"];

for (var i=0; i < e.length; i++)
{
if (e[i].checked)
{
a = e[i].value;
break;
}
}
return a;
}
</script>

Hope this helps,

Mun

"mg" <[e-mail] m> wrote in message
news:03******** *************** *****@phx.gbl.. .

After a selection is made in the following RadioButtonList

<asp:RadioButto nList id="RadioButton List1" runat="server">
<asp:ListItem Value="Y"></asp:ListItem>
<asp:ListItem Value="N"></asp:ListItem>
</asp:RadioButton List>
the following script [in a client-side CustomValidator]
returns null, not "Y" or "N"

<script language="javas cript">
q = document.getEle mentById
("RadioButtonLi st1").getAttrib ute("SelectedVa lue")
alert(q)
</script>

Can you tell me what I'm doing wrong?

[mg]

Thanks!

-----Original Message-----
As far as I know, you can't get the selected value of a radio buttondirectly. You need to iterate through each item in the group, until youfind the selected item, and then get its value. An example of how to dothis is below:

<script language="javas cript">
function GetVal()
{
var a = null;
var f = document.forms[0];
var e = f.elements["RadioButtonLis t1"];

for (var i=0; i < e.length; i++)
{
if (e[i].checked)
{
a = e[i].value;
break;
}
}
return a;
}
</script>

Hope this helps,

Mun

"mg" <[e-mail] m> wrote in message
news:03******* *************** ******@phx.gbl. ..

After a selection is made in the following RadioButtonList
<asp:RadioButto nList id="RadioButton List1" runat="server"> <asp:ListItem Value="Y"></asp:ListItem>
<asp:ListItem Value="N"></asp:ListItem>
</asp:RadioButton List>
the following script [in a client-side CustomValidator]
returns null, not "Y" or "N"

<script language="javas cript">
q = document.getEle mentById
("RadioButtonLi st1").getAttrib ute("SelectedVa lue")
alert(q)
</script>

Can you tell me what I'm doing wrong?

.