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How do I determine if a radio button was chosen on a form?

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Feb 02.2006

I need to verify that a radio button was chosen on a form prior to the form being validated by our server’s CGI routine. I’d like to issue an alert if the radio button was not chosen. How do I do this using Javascript???

Thanks!!

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JavaScript

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@johneboyFeb 02.2006 — <script language="javascript">

function validateForm(){

if(document.getElementById('rOpt').checked==true){return true;}else{alert('select radio option');return false;}

}

</script>

<form name=form>

<input type="radio" name="rOpt">Radio Option

<input type="submit" onclick="validateForm();return">

</form>
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