When are individual listeners better than event delegation?
When there are few items (< 10), each item needs a different handler, or the parent has many non-relevant children (delegation would check e.target on every click, most of which are irrelevant). Individual listeners are more direct for unique elements.
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More FAQs in Event Delegation vs Individual Listeners
Use delegation for many similar items (lists, tables), dynamically added elements, and when memory is a concern. Use individual listeners for few items (< 10), items with different handlers, and when the parent has many non-relevant children.
Every click on the parent triggers the handler (even clicks on non-relevant areas), slightly less direct than individual listeners, and requires checking e.target on every click. For few items, individual listeners are simpler.
For more than 20-50 items, consider delegation. Each listener consumes memory. 100 individual listeners is wasteful when one delegation listener can handle all of them.
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