So code an eventing system that throws exceptions when an event name that isn't registered is used... It's not difficult; it's what I use in all my JavaScript.

So code an eventing system that throws exceptions when an event name that isn't registered is used... It's not difficult; it's what I use in all my JavaScript. The jQuery route is also interesting, as it registers events as actual methods. So trying to call an event that doesn't exist will, again, throw an exception.