A common mistake in React: Mixing fetching, formatting, logic, and JSX


A common mistake in React: Mixing fetching, formatting, logic, and JSX.

This works fine in small components. But it’s hard to maintain and test as complexity grows.

Instead, keep components simple:
✅Avoid embedding complex logic in JSX
✅Extract state management to custom hooks
✅Extract plain logic to classes or pure functions
The result? Components that are mostly JSX, and thus, easy to understand, test, and reuse.

For more details, check out: https://martinfowler.com/articles/modularizing-react-apps.html

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