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Date: 2025-09-01 09:08:59
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React does indeed handle event delegation internally through its SyntheticEvent system. However, there are still specific scenarios where manual event delegation can be beneficial.

React's Built-in Event Delegation

React automatically delegates most events to the document root, so when you write:

javascript<button onClick={handleClick}>Click me</button>

React doesn't actually attach the listener to that specific button - it uses a single delegated listener at the document level.

When Manual Event Delegation is Still Useful

Despite React's internal delegation, manual event delegation is valuable for:

  1. Performance with large dynamic lists (1000+ items)

  2. Complex nested interactions within list items

  3. Mixed event types on the same container

  4. Integration with non-React libraries

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Posted by: Yukta M Pol