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

There's currently no way to portably check the size of an uploaded file from the web browser. The HTML5 File API makes this possible, but that's not available in MSIE7 -- it's currently on track for MSIE10.

There is intentionally no way to determine the full path of an uploaded file, as that may include sensitive information, like the name of the end user.