- Do you remember which events IE conveniently forgets about, like not bubbling "submit" events above forms? - Can you write out AJAX code that reliably works

- Do you remember which events IE conveniently forgets about, like not bubbling "submit" events above forms? - Can you write out AJAX code that reliably works in all versions of IE by memory? And don't forget to add automatic jsonp support for cross-domain requests. - Do you remember how to get the width and outerWidth of an element in a reliable cross-browser way? There was a time when I could do these things from memory. That time was when I was interviewing for jobs. In daily work, I only have to half-remember these things and can operate at a higher level of abstraction.