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Making form fields required

I have a form with textfields and radio buttons(groups). For instance....

What is your favorite color
a. red (radio)
b. blue (radio)
c. green (radio)
d. other (radio)-please specify _______________ (text)

I want to make the entire question required, so the user must select atleast one of the radio buttons and if they select (d) I want to also make the text field required.

I have many questions like this on my form.

Any suggestions?

HamdyHassan

yes you can using javascript

HamdyHassan

Take a look on the following example

https://www.experts-exchange.com/questions/20401581/validate-radio-buttons.html

Wasistdas

not necesserily javascript:

say you radiobutton named "aaa"

then make just another input
<INPUT TYPE="hidden"
NAME="aaa_required"
VALUE="Please, select your favorite color.">

dash420

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<script language="JavaScript">
function fncheck(){
if ( document.testform.rdcolor[3].checked){
if (document.testform.txtOthers.value == ""){
alert("Specify the other")
document.testform.txtOthers.focus()
return false
}
}

}
</script>

</head>

<body>
<form name="testform">
<br><input type="Radio" name="rdcolor" checked>Red
<br><input type="Radio" name="rdcolor">Blue
<br><input type="Radio" name="rdcolor">Green
<br><input type="Radio" name="rdcolor">Other  <input type="Text" name="txtOthers" value="">
<br><input type="button" name="btncheck" value="check" onclick="fncheck()" >
</form>

</body>
</html>

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anandkp

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