I agree with Tom,
If you're looking for that sort of functionality just use the old
fashioned way of setting the event handler as a property. That way
any event will only have one handle.
On Sep 14, 11:34 am, Tom Gregory <[EMAIL PROTECTED]> wrote:
> On Sep 14, 2007, at 1:08 AM, Roland wrote:
>
>
>
> > Hi there,
>
> > Events can be attached multiple times to the same element.. is there a
> > way to prevent this?
>
> > Something like ...
>
> > if(!$(el).hasEventAttached()) Event.observe($(el), 'click',
> > function());
>
> If this is what you *really* need (and I'd suggest you may have a
> design problem if you think so), then don't use Event.observe--
> instead, attach the handler directly:
>
> // Not tested
> var f = function (e) { ... }.bindAsEventListener(someObject);
> if (el.onclick != f) {el.onclick = f;}
>
> TAG
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