client-side-code

How can i run code on the client side from a browser?

With LLVM and silverlight this may be possible now (or it may be possible with flash). I like the user to select a file and then do the following things 1) Hash it with md5 and sha1 2) If archive check if an exe is in it 3) If archive check if password protected The first to see if the user has uploaded it already (today, yesterday, la...