How to check file input size with jQuery?

Question

I have a form with file upload capabilities and I would like to be able to have some nice client side error reporting if the file the user is trying to upload is too big, is

Answer 1

I found this to be the easiest if you don't plan on submitted the form through standard ajax / html5 methods, but of course it works with anything.

NOTES:

var size = $('#uploadForm')["0"]["0"].files["0"].size;

This used to work, but it doesn't in chrome anymore, i just tested the code above and it worked in both ff and chrome (lastest). The second ["0"] is now firstChild.