Hi,

I need the SelectedValue of a radiobuttonlist in a Javascript variable. The
radiobuttonlist is only used in a form for inputting data into a database.
Before sending it to the database, i check the inputted values in
Javascript.
(By the way there is also a dropdownlist in the form, and i have no problem
with getting its SelectedValue with the same javascript code). With the
radiobuttonlist, i get "undefined" as value.

Thanks for helping me
Arnold

The radiobuttonlist is created in the code-behind like this:

Dim rb As RadioButtonList
Dim frm As HtmlForm = Me.FindControl("form1")
Dim rbl(2) As ListItem
rb = New RadioButtonList
rbl(1) = New ListItem("option 1", 1)
rb.Items.Add(rbl(1))
rbl(2) = New ListItem("option 2", 2).
rb.Items.Add(rbl(2))
rb.ID = "radio1"
frm.Controls.Add(rb)

The code in the aspx file:
<form id="form1" runat="server">
<input id="Sub1" type="button" value="submit" onclick="checkvalue()"/>
</form>
<script type="text/javascript">
var antw
function checkvalue()
{
antw=document.getElementById("radio1").value
alert(antw) // this gives: undefined
.....
.....
}
</script>

Arnold wrote:

Run the page then View Source to see the radio buttons generated by the .Net
control. This will reveal their IDs at which point it should be a simple
matter to to use getElementById to get the value.

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"Arnold" wrote:

RadionList value can be processed in server side before sending to database.
radio1.SelectedItem.Text
For javascript you will have to loop through the collection of radio
buttons and check whether its checked or not, then take cchecked value.

thanks,
John Chacko

Thanks to all

"Arnold" <ar (AT) nold (DOT) cv> schreef in bericht
news:OvZJRRlBHHA.3536 (AT) TK2MSFTNGP03 (DOT) phx.gbl...

Or I guess you could change your script a little.

function checkvalue()
{
var col = document.getElementsByName("radio1")
for (i = 0 ; i < col.length ; i++) {
var el = col[i];
if (el.type == "radio" && el.checked) {
alert(el.value);
break;
}
}
}