[Javascript] newbie function question

[javascript@xxxxxxxxxx (Rodney Myers)]

Matthew, for a reuseable function of this sort I would recommend that you just
pass the form object.

Within the function all element names and types can be found from the
form.elements array

The first element in the array is form.elements[0]
Its name is form.elements[0].name
Its type is form.elements[0].type
Its value is form.elements[0].value

If you create an associative array based on actual element names you can create
data which can control your function. e,g on the matter of required fields,
required input lengths even formats.

But what is most important is to have something simple, that works and on which
you can later build, perhaps along lines of my suggestion.

hth

Rodney



Matthew Collins wrote:

> hi all,
>
> i'm trying to write a function to validate a form.  problem is, i want the
> function to be reusable on many pages, so one of the variables passed to the
> function is the form name, while the other variable is the name of the
> fields to be checked.
>
> problem is, i'm getting an error that the "'document.FormName.formArray'
> does not exist"
>
> here's the javascript:
>
> <script language="JavaScript">
>
> <!--
> function IsFormComplete(FormName,formFields)
> {
> var x       = 0
> var formArray = formFields.split(",");
>
> for (x=0; x < formArray.length; x++)
>    {
>         if (document.FormName.formArray[x].value == '')
>      {
>         alert('Please enter the '+document.FormName.formArray[x].name +' and
> try again.')
>         document.FormName.formArray[x].focus()
>      }
>    }
> }
> // -->
>
> </script>
>
> *and the html of the form*
> <form method="POST" action="formTest.asp" name="form"
> onsubmit="IsFormComplete('form','T1,S1,C1');">
>
> thanks in advance,
>
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