Explain useReducer and when to prefer it over useState
Tests if you know useReducer centralizes complex state transitions better than scattered useState. Answer: define reducer/dispatch, then contrast with useState via interdependent fields or deep updates. Red flag: calling it only for global state or Redux.
Tests whether you can articulate when centralized reducer logic outperforms fragmented useState. A strong answer defines useReducer as a hook that accepts a pure reducer function and a dispatch method, then names a concrete scenario such as a multi-step form where fields depend on each other or a state machine with explicit transitions. Red flag: treating useReducer as merely a mini-Redux for global state or claiming it adds performance benefits by default.
Read the original → react.dev
- #react
- #hooks
- #usereducer
- #state-management
- #intermediate
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