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Ember 2 performances, is javascript event delegation in #each automagically? How to coalesce similar listeners?

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@johnunclesam wrote:

I’m reading a lot (for study) about “Event delegation” and also because in this video: https://www.youtube.com/watch?v=udix3GZouik (minute 22:28) Alex Blom talks about: “Coalesce similar listeners” for performance reasons.

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My question is: is Ember automagically performing about this problem?

If I have an #each with many div in it how to coalesce listeners on the parent div? Does Ember do it in my place?

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