I've had great success using the typeOf() to test for the existence of a field. I would use:

if( typeOf(document.MyForm.MyFormFieldName ) != 'undefined' )

However I guess CSS and XHTML is moving away from the Name attribute to the ID attribute. I'm not having any luck using typeOf with getElementByID(). I tried using the following:

if( typeOf(document.MyForm.getElementById('MyFormField ID') ) != 'undefined' )

What is the way to test for the existence of a form field using the ID attribute?

Hi there,

getElementById is a method of the document, not the form, so you should use this:

document.getElementById('MyFormFieldID')

instead of this:

document.MyForm.getElementById('MyFormFieldID')

HtH,

Imar
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Imar Spaanjaars
Everyone is unique, except for me.

Cool, thanks.