Javascript to check filesize before upload in Internet Explorer

Question

Is it possible to use Javascript to check for a file\'s size (at the client side) before it is actually uploaded to the server?

The application is built on EXTJS and

Answer 1

The reason you can't is because it would be bad if browsers, and javascript, could access the clients filesystem.

This is actively denied and can be seen as an attack.

Using jQuery, Restricting File Size Before Uploading