Why we’ll all use React Hooks
summary
Explains that React Hooks (alpha available) let function components replace class state and lifecycle with specific APIs like useState (multiple independent states, lazy initializer), useEffect (subscribe and return cleanup, dependency array to avoid unnecessary resubscribe) and useContext. Shows a concrete refactor: friend availability subscription that previously split logic across componentDidMount/componentDidUpdate becomes one effect with unsubscribe that reruns only when friendId changes. Hooks require call order, lint rules enforce it, and remain 100% backward compatible.
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chapters (9)
- 0:00Introduction to React Hooks
- 6:20Problems with React classes
- 12:30What are React Hooks?
- 14:15State hook explained
- 19:22Effect hook and side effects
- 24:01Context hook and cleanup
- 26:54Rules for using Hooks
- 28:42Custom hooks and examples
- 30:08Summary and future of Hooks
