Scaling Up with Reducer and Context – React

Reducers let you consolidate a component’s state update logic. Context lets you pass information deep down to other components. You can combine reducers and context together to manage state of a complex screen. You will learn How to combine a reducer with context How to avoid passing state and dispatch through props How to keep context and state logic in a separate file Combining a reducer with co

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アプリが複雑化してきた場合はreducerで状態遷移を括り出し、contextで配下のコンポーネント群にstateとreducerを共有する