radio button verification

**pnj** · Apr 3rd, 2001, 07:17 PM

a javascript question.

i have three radio buttons and I want to, on form submit, verify what one has been choose.

I am trying this:
var strURL=document.frmEvent.txtURL.value;
var optionButtonSelected=document.frmEvent.inpURL.checked;
alert(optionButtonSelected);

this is inside the function called by the submit button.

i have the names correct.
the form is called frmEvent and there is a text field called txtURL and the radio buttons are all called inpURL.

as you can see i have an alert to get the value from the checked radio but it comes back 'undifined'

so what am i doing wrong?
any suggestions are welcome,
if you need more information , just ask.

thanks

**Mark Sreeves** · Apr 4th, 2001, 07:38 AM

try this:

Code:

<HTML>
<HEAD>
<script language=javascript>

function x(){
var strURL=document.frmEvent.txtURL.value;
var optionButtonSelected=-1;

for(var i=0;i<document.frmEvent.inpURL.length;i++)
{
	if(document.frmEvent.inpURL(i).checked==true)
	{
		optionButtonSelected = i;
	}
	
}

if(optionButtonSelected==-1)
{
	alert("Please select and option")
}else{
	alert(optionButtonSelected);
}
}
</script>
</HEAD>
<BODY>
<form name=frmEvent>
<input name=txtURL>
<INPUT name=inpURL type=radio> option 1<BR>
<INPUT name=inpURL type=radio> option 2<BR>
<INPUT name=inpURL type=radio> option 3<BR>
<input type=button onClick="x();">
</form>
</BODY>
</HTML>

**pnj** · Apr 4th, 2001, 03:30 PM

thanks,
turns out i'm not doing it this way but i'll be putting that code into my 'javascript' library.

thanks again Mark

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