# List all current Listeners to an EventDispatcher

**URL:** <https://forum.kirupa.com/t/list-all-current-listeners-to-an-eventdispatcher/294424>\
**Category:** flash\
**Created:** [August 13, 2009, 7:54pm UTC](https://forum.kirupa.com/t/list-all-current-listeners-to-an-eventdispatcher/294424 "2009-08-13T19:54:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![IQAndreas](https://avatars.discourse-cdn.com/v4/letter/i/f08c70/32.png) [@IQAndreas](https://forum.kirupa.com/u/IQAndreas)\
**Post date:** [August 13, 2009, 7:54pm UTC](https://forum.kirupa.com/t/list-all-current-listeners-to-an-eventdispatcher/294424/1 "2009-08-13T19:54:56Z")

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Is there any way to list all listeners to an EventDispatcher instance, or at least list all event strings that are being listened for?

I know there is a “hasEventListener()” function, but you need to know the string you pass in in order to check for it. I suppose it would be bad coding ethic, but it can have its uses. (Am I making myself clear enough on what I am looking for?)

Also, how are eventListeners speedwise? Since there is a lot that needs to be accomplished when dispatching and listening for events, would it be a bad idea to use an Event system for such potentially CPU heavy items as collision detecting?