jQuery - INPUT type=File , Image FileType Validation options?

Question

I have the following:

On the server I check to make sure it\

Answer 1

There may be browsers that allow you to create a of the given path, by that you could check if it's a real image or not(if not the onerror-event should fire on the image and it will have a width/height of 0).

But as this only works in some browsers and is an security-risk(in my mind) I would'nt suggest to do this, so my answer is: you can't validate there anything.

Checking the file-extensions like suggested by Alex may be an option, but the file-extension does not guarantee if it's a image. However, as a simple pre-check(not validation) it could be useful.