Visual Event Bookmarklet
Allan Jardine has developed a bookmarklet, called Visual Event, which shows the elements on a page that have events subscribed to them, what those events are, and the function that would run when the event was triggered.
This is a great debugging tool to quickly see a high-level interactional aspect of a page. The results come through nicely color coded and iconized, so you get a nice report.
Now Visual Event will only recogonize events added by three libraries, which is a limitation. Those three librares are jQuery 1.2.x, YUI 2.6.x, and MooTools 1.2.x, so they’re the popular libraries at least.
This isn’t the greatest tool in the world, but it’s a new idea, which I like. It still needs work (more libraries, better browser integration (won’t work in IE at the moment)), but it’s a good starting point.
The code isn’t GPL at the moment, but once he’s polished it up a bit more, he will. So if you want to help him out, please drop him a line.