Custom Hooks
Extract reusable logic into custom hooks. Learn naming conventions, dependency arrays, and testing strategies. This outline is in progress — expect a short read until full lessons ship.
Check your understanding
What should a custom hook expose?Show answerHide answer
Answer
A clear contract — values and callbacks the UI needs — without leaking unrelated implementation details.Why do dependency arrays matter in hooks extracted into customs?Show answerHide answer
Answer
Wrong dependencies cause stale closures or extra runs; the custom hook still follows the same Rules of Hooks.