Possible to check for file size in form validation?

[Pete Bennett]

Folks,

I want to allow people to upload files to my site. I wondered, is there
a way in Javascript to limit the size of the file they are able to
submit?

Cheers
--
Kind Regards,
Pete Bennett

future implications limited (UK)

mobile: 0702 11 16 2 47 (+44 7990 594 088 from outside UK)
office: 0870 74 24 0 24 (+44 8707 424 024 from outside UK)


www : http://www.futureimplications.com

[Janwillem Borleffs]

Re: Possible to check for file size in form validation?


"Pete Bennett" <pmb1@futureim. demon.co.uk> schreef in bericht
news:idY$iZApFP N$Ew5u@futureim .demon.co.uk...[color=blue]
> Folks,
>
> I want to allow people to upload files to my site. I wondered, is there
> a way in Javascript to limit the size of the file they are able to
> submit?
>[/color]

Short answer: No, you should handle this on the server.

Long answer: Not reliable. With IE you could do something like:

function checkSize(files pec) {
var fso, f, s;
fso = new ActiveXObject(" Scripting.FileS ystemObject");
f = fso.GetFile(fil espec);
s = f.size;
// Do something with var s
}

But this can easily be comprimised by the browser's security settings or the
usage of another browser or platform.


JW