[thelist] js validation suggestions

[Tom Dell'Aringa]

--- Scott Brady <evolt at scottbrady.net> wrote:
> From: "Tom Dell'Aringa" <pixelmech at yahoo.com>
> >I'm thinking there might be a better way to validate this instead
> of
> >doing:
> >
> >if((field == "") && (field == "") && (field == "") etc ad
> nauseum..)
>
> One thing you can do is loop over the form fields.  Something like
> this:
>
> -------- Begin code -----------
> function validate(theForm)
> {
>      var filledYN = false;
>
>      for (i=0; i<theForm.length; i++)
>      {
>           if ((theForm[i].type == 'text') &&
> (theForm[i].value.length > 0))
>           {
>                filledYN = true;
>           }
>           else if ((theForm[i].type == 'select') &&
> (theForm[i].selectedIndex >= 0))
>           {
>                filledYN = true;
>           }
>      }
>
>      if (!filledYN)
>      {
>           alert('Please select at least one criterion.');
>      }
>      return filledYN;
> }
> -------- End code -----------
>
> Oh, here's the form definition:
> <form name="thisForm" action="whatever" method="post"
> onsubmit="return validate(this);">
>
> That should do the trick.  I'm writing this off the top of my head,
> so you might want to verify that a selectbox does return a "type"
> of "select".

Excellent Scott! Just what I was looking for..why didn't I think of
that..

Tom

=====
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