javascript: How to debug keyboard events

Question

Imagine a web application which uses custom keyboard event handlers which might do event bubbling - or event catching.
Is there a way (e.g. Firefox/Firebug addon) to debug each keystroke/keyboard event, something like:

• displaying the event type and all attributes
• trace which javascript method had been called
• in case of event bubbling which further methods have been called

To clarify my question: I don't know which method handlers exist and where they are defined - this is what I am trying to find out.

Answer 1

You could try to visualize the vents with the Firebug + Eventbug extension.

For a general overview on keyboard events in different browsers, try this: http://unixpapa.com/js/key.html