Hi. I'm not even sure if this is possible.. but its worth asking :)

I am trying to validate that an image is no larger than xxx by xxx pixels in Javascript (before uploading).

I had a look on Google, but it all seems to be related to ASP and PHP checking?

http://www.google.com/...rowser+before+upload

Does anyone know if this is possible, and if so, does anyone have any pointers?

TIA

Andy (mod)
andy@ultranerds.co.uk

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Hi,

You can't. The security settings in the browser prevent you from accessing the contents of a file field. It needs to be checked server side.

Cheers,

Alex
--
Gossamer Threads Inc.

Thanks for confirming that. At least I'm not gonna spend another couple of hours looking at how to do something, thats impossible :P

BTW, what are you doing up at this time of day?

Cheers

Andy (mod)
andy@ultranerds.co.uk

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Hello Andy, Have attached a very quick and dirty Javascript
image size thingy for the file upload attribute.

-- obviously this will only work if you select an image from the browse button.

You might change the test of the image height and width for an onSubmit
returning true if under size and false if over size, etc ....

Have only tried on IE 6.0 on XP.

have a go

thanks cornball

Hello Andy, Version 2 of checking an Image size before uploading.

Only tested on IE version 6 and XP

You still have to check on the server side as Javascript can be turned off on the client side.

thanks cornball.

Hello a small goof fixed on other file types selected.

See new ImageSizesV3.html attached.

It is only a JS toy after all and not an Atom bomb.

thanks cornball

Goof goof goof

Version 4 covers case on file ext , so JpG or JPG or jpg are okay.

thanks cornball

Thanks... that seems to work great :)

Cheers

Andy (mod)
andy@ultranerds.co.uk

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