Form element validation question

[GSXR179]

Hi,

Does anyone know how to validate a text box if a radio button is checked?

Here's the situation.

I have multiple pairs of radio buttons on a page yes/no I need to ensure that for a choice of no, the user fills out a comments text box for the given no answer.

I know this seems simple but I am really stuck.

Thanks in advance,

Mike

 

[Sarky78]

haven't tested this but i think this should work:

function checkThingie() {
if (document.yourForm.yourradiobutton.value == 'No') {
if (document.yourForm.yourtextfield.value == "&quot {
alert("You need to enter something in the text box&quot
return false;
}
}
}

put the function into your form on the onSubmit event like this:

<form name=&quot;whatever&quot; onSubmit=&quot;return checkThingie()&quot;>

hope this helps!

Tony

 

[GSXR179]

Thanks Tony, I'll try it

 

[r937]

before testing the radio button's value, i think you have to, um, check it to see if it has been checked (if you know what i mean)

there are a whole bunch of useful javascript code snippets at

http://irt.org/script/

in fact, this one seems to be quite apropos --

Q1039 How can I ensure that one radio button is checked and that the relevant text field is not empty?

http://developer.irt.org/script/1039.htm

rudy

 

[GSXR179]

The above code does work on a defined number of radio boxes with static values.

However, the page that I'm working on has dynamic radio buttons, as I have listed below.

<SCRIPT Language=&quot;Javascript&quot;>
function checkComment() {
if (document.myForm.a#myQuery.id#.value == 1) {
if (document.myForm.COMMENT_#myQuery.ID#.value == &quot;&quot {
alert(&quot;You need to enter a description in the comments box for selection of no&quot
return false;
}
}
}
</script>
<cfform action=&quot;form_act.cfm&quot; name=&quot;myForm&quot; onSubmit=&quot;return checkComment()&quot;>
<cfloop action=&quot;myQyery&quot;>
<cfinput name=&quot;a#myQuery.id#&quot; type=&quot;radio&quot; value=&quot;1&quot; required=&quot;yes&quot; message=&quot;Please make a selection&quot;>Yes

<cfinput name=&quot;a#myQuery.id#&quot; type=&quot;radio&quot; value=&quot;2&quot; required=&quot;yes&quot; message=&quot;Please make a selection&quot;>No

<textarea name=&quot;COMMENT_#myQuery.ID#&quot; cols=&quot;&quot; rows=&quot;&quot; name=&quot;thisText&quot;></textarea>
<cfloop>
</cfform>
I'm having a problem of calling up the function. I have tyiesd naming the function with the unique ID number but with only one form I don't know how to get it to fire.

Thanks for all of your help on this.

Mike