On Sep 29, 8:45 am, KammylandSoftware <kammyl...@gmail.com> wrote:
> When ever you add oberservers to the same event such as
>
> Event.oberve("myElement", "mousedown", "someMethod_1()");
> Event.oberve("myElement", "mousedown", "someMethod_2()");
>
> does IE execute them in REVERSE order upon fire?
>
> They get executed by order of chronological assignment in FF.
>
> IE is a bloody-idiot.
IE doesn't implement the W3C Event model and even if it did, it
wouldn't necessarily help. The DOM 2 Events specificaton specifically
says event listeners aren't guaranteed to execute in any particular
order:
"Although all EventListeners on the EventTarget are
guaranteed to be triggered by any event which is received
by that EventTarget, no specification is made as to the
order in which they will receive the event with regards to the
other EventListeners on the EventTarget."
<URL: http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-flow-basic
>
However, the DOM 3 Events spec says order must be preserved. You may
find this thread interesting:
<URL:
http://groups.google.com/group/comp.lang.javascript/browse_frm/thread/e7145c0d89caf0a1/e1eec62b11b29315?q=listener+order+group:comp.lang.javascript#e1eec62b11b29315
>
If you want an event registration system that will ensure listeners
are called in the order they are added, you could use something like
the code suggested here:
<URL; http://groups.google.com/group/comp.lang.javascript/msg/a318f930c21433d6
>
Read the rest of the thread, it is interesting. You could also read
this one:
<URL:
http://groups.google.com/group/comp.lang.javascript/browse_frm/thread/e7145c0d89caf0a1/7dd914a8dfef0241#7dd914a8dfef0241
>
Don't use the code suggested by the OP, read the responses by Richard
Cornford to get valuable insights into how to implement what you are
after.
--
Rob
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