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useContext: How to Manage Global State

  In React, the useContext hook allows sharing global state among components without manually passing props at each level of the component hierarchy.


Synopsis:

  The useContext hook is used to access context values in any component without having to explicitly pass those properties through all intermediate levels of the component tree.

  • 1. Create a context:

    We use createContext to create a context with a default value.

  • 2. Provide the context:

    We use the CountProvider component to wrap the component tree where we need to access the global state.

  • 3. Consume the context:

    Components consume the context using the useContext hook.


Purpose:


  • Share global state between components without manually passing props.
  • Facilitate the management of global data in large applications.
  • Create a cleaner and more scalable component architecture.

Exercises

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What is useContext in React?


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Is useContext global state? Is useContext good for state management? How does the React library manage its state? When to use global state management in React? useContext React useContext React example useContext examples Provider useContext React docs useContext useReducer React create context use context Use Context React Native