form validation

zoser · Jan 27, 2003

Does anyone know how to validate a checkbox and text field together? For instance, I am creating a form that has a checkbox for the answer "Yes" and textfield for the answer "No" The question is something like this:

Do you like ice cream?

Yes (checkbox)
If No, Why? (textfield)

I would just like to validate it so that if the user completely misses the question they will get prompted to answer yes or no. I have tried a number of different combinations of code and nothing seems to work. Can someone please point me in the right direction?

DoubleV · Jan 27, 2003

you pretty much have to say:
if ((checkbox is not checked) && (text field is empty)) {
alert("please tell us if you like / do not like icecream&quot

} --------------------------------------------------
Goals are dreams with deadlines
-------------------------------------

http://www.nimlok.com

http://www.orbusinc.com

ikalair · Jan 27, 2003

This should work.

<html>
<head>
<title>Untitled</title>
<script>
function validate()
{
//check ifcheckbox and txt field weren't touched
if (document.all.c1.checked==false && document.all.txt.value=="&quot

{ alert("Please answer the question&quot

; }
else
//The question was answered.
{ alert("Thank You&quot

}
}
</script>
</head>
<body>
<form>
Do you like ice cream? Yes
<input type="checkbox" name="c1"><br><br>
If No, Why? <input type="text" name="txt"><br><Br>
<input type="button" name="but" value="check" onclick="validate();">
</form>
</body>
</html>

zoser · Jan 27, 2003

thanks for the info. but i can't seem to get it to work

this is the code -- looks similar to DoubleV's but isn't working (it is part of other validation statements)

else if ( (document.initiationForm.gdg[0].checked != true) &&
(emptyField(formObj.gdgNum))
alert("Please fill in yes or no.&quot

what am i missing??

DoubleV · Jan 27, 2003

1. check that your script actually gets to the "esle" part.
2. if it does, then i have 2 ideas:
a. you seems to be missing 1 bracket in your condition:

Code:

if (  (document.initiationForm.gdg[0].checked != true) && (emptyField(formObj.gdgNum)) )
b. try changing 
[code]
document.initiationForm.gdg[0].checked != true

to

Code:

!document.initiationForm.gdg[0].checked

--------------------------------------------------
Goals are dreams with deadlines
-------------------------------------

http://www.nimlok.com

http://www.orbusinc.com

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form validation

zoser

Programmer

DoubleV

Programmer

ikalair

Programmer

zoser

Programmer

DoubleV

Programmer

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