How React Actually Works Under the Hood (And Why Your Mental Model Might Be Wrong)

Post · https://dev.to/smtahosin/how-react-actually-works-under-the-hood-and-why-your-mental-model-might-be-wrong-12b8

A visual, beginner-friendly guide to React internals. Learn what triggers re-renders, how the Virtual DOM diffs trees, what the Commit phase actually touches, and why state updates feel asynchronous.

First seen by Oriel on Oct 14, 2026, 10:34 UTC.

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DEV Community: 44, latest observation Oct 15, 2026, 08:12 UTC; 0 over observed period since Oct 14, 2026, 10:34 UTC

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DEV Community: 24, latest observation Oct 15, 2026, 08:12 UTC; 0 over observed period since Oct 14, 2026, 10:34 UTC

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Source	External ID	URL
DEV Community	4729307	https://dev.to/smtahosin/how-react-actually-works-under-the-hood-and-why-your-mental-model-might-be-wrong-12b8