Hi Andrew,
The the normal behavior of an checkbox is, that it will submit the value of
the checkbox with the form if the user has selected the checkbox. If it is
not selected, the browser will not send the value of the checkbox to the
server. If you ask for the checkbox-parameter in the request and it is not
present, you know, that the user has not selected the checkbox.
cu Frank
> -----Ursprüngliche Nachricht-----
> Von: Andrew Steady [SMTP:[EMAIL PROTECTED]]
> Gesendet am: Donnerstag, 19. April 2001 12:47
> An: [EMAIL PROTECTED]
> Betreff: null or empty string
>
>
> Hi,
>
>
>
> I have written a dynamic validation routine which is based upon only
> validating the fields that have been submitted and then "mopping up"
> later. This only works because you can tell the difference
>
> between a field being submitted and left blank (value = "") and a field
> not
> being present in the request (value = null).
>
>
>
> This is true for input type="text" but is not true for input
> type="checkbox", has anyone come accross this problem before? any
> solutions ideas?
>
>
>
> Cheers,
>
>
>
> Andy S
>
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