Recommended way to check file size on upload

Question

I am working on a web application which supports file uploading. I am already familiar checking the size in server side, but i wanted to check the file size in a client side.

Answer 1

lol ofc you can do it, it's just a bit of hardwork, if you search for "uploadbar flash" instead of using the data you retrieve to create a uploader you could use it to pass it on or compare or do whatever you want the one i found that seemed quite good is this one, it doesnt necceraly use flash but you could use it to achive the same thing http://www.plupload.com highly configurable p.s. you could force it to just use flash if you really like