So, just keep track of them with a typical variable?

var myElementIsObserved = false;
...
if(! myElementIsObserved)
{
  Event.observe('myelement','focus',dosomething);
  myElementIsObserved == true;
}

On Oct 4, 3:33 pm, kangax <[EMAIL PROTECTED]> wrote:
> On Oct 4, 5:20 pm, kstubs <[EMAIL PROTECTED]> wrote:
>
> > So how do you tell if you've already registered an event to be
>
> It's a good idea to keep track of them : )
> If you are working in an unknown environment and absolutely need to
> know if an element is "observed" by prototype:
>
> Element.addMethods({
>   isObserved: function(element){
>     return ('_prototypeEventID' in $(element));
>   }
>
> });
> > observed?  Also, what is the penalty for not issuing a stop observe?
>
> Usually, increased memory usage (and probably some run time processing
> overhead)
>
> --
> kangax
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