I'm using event delegation a lot recently. I even opened a ticket for
it -
http://prototype.lighthouseapp.com/projects/8886/tickets/435-eventdelegate-and-elementmethodsdelegate
The problem I see in your approach, is that Event.stopObserving won't
clear callback from cache, but if your Event.register becomes
Event.observe (i.e. in core) this may not be a problem) or you can
just wrap Event.stopObserving.
More I look your idea more it looks to me like an replacement for
Event.observe. In the ticket the API for event delegation looked like
this
document.delegate('a', 'click', function(e){ console.log(e.target) });
Witch saves a lot of writing and loop calling. Unfortunately my
original idea was to have:
document.delegate('click', {
'a': log,
'div': log
});
... but it wasn't approved :( / :)
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