Andrej Krivulčík

After changing the event in verifier from keypress to keyup, the exercise works in firefox, but the registered characters are converted to upper case. The exact same thing happens in...

I believe that the difference in the behavior is because of the different data being checked for distinctness: In the exercise 40, the data is a **single character** from an...

This is the case only in firefox. I got affected by this too, but it works correctly in Chromium. This seems to be not easily fixable: http://stackoverflow.com/questions/12704686/html5-with-jquery-e-offsetx-is-undefined-in-firefox http://stackoverflow.com/questions/11334452/event-offsetx-in-firefox