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How does React Reconciliation work?

Reconciliation is the process React uses to compare the old Virtual DOM with the new Virtual DOM.

Steps:

  1. Create new Virtual DOM
  2. Compare with previous Virtual DOM
  3. Identify changes
  4. Update only affected nodes in the real DOM

This process minimizes DOM operations and improves performance.

Related Drills

What is the Virtual DOM and how does React use it to render pages?

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Explain the difference between useEffect hooks and useLayoutEffect hooks.

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What is the Virtual DOM in React?

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JB

Jeevan Bhargav

Audited by Creator

This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.