[html5] Propagating custom Events?

[Ian Hickson]

On Fri, 9 Apr 2010, Rik Sagar wrote:
>
> Was the idea of allowing custom event types ever discussed for HTML5?
> Correct me if I'm wrong, but currently the document will only propagate
> events of known types (UIEvents MouseEvents MutationEvents HTMLEvents), and
> you can't add other event types to propagate via dispatchEvent()?
>
> I was trying to use the addEventListener()/dispatchEvent() model to
> distribute events in my (javascript) app.  I thought I would be able to do:
>    mydiv.addEventListener('my_event_1', cb, false);
> 
> and later:
>    mydiv.dispatchEvent(evt);
> 
> However, to do this I needed to create an event object (evt) and when I
> tried to create an event using document.createEvent() it seemed I could only
> use pre-existing event types.

You need to use an Event interface that the browser supports, but you can 
make custom events easily, just use the Event interface directly when 
calling createEvent().

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'