10 interview questions regarding react useReducer() Hook

10 interview questions regarding react useReducer() Hook

Here are 10 interview questions related to the useReducer Hook in React:

  1. What is the purpose of the useReducer Hook in React?

    • Explain why and when you might choose to use useReducer instead of useState.
  2. How does useReducer work, and what are its arguments?

    • Describe the signature and functionality of the useReducer Hook.
  3. Compare and contrast useReducer with useState.

    • Highlight situations where one might be preferred over the other.
  4. Explain the structure of the state object when using useReducer.

    • What is the typical structure of the state object, and how is it different from the state in a useState scenario?
  5. How do you dispatch actions with useReducer?

    • Provide an example of dispatching actions and explain their role in state management.
  6. What is the purpose of the reducer function in useReducer?

    • Describe the role of the reducer function and how it handles state transitions.
  7. How can you handle complex state logic with useReducer?

    • Discuss scenarios where useReducer shines in managing complex state updates.
  8. Explain the concept of action types in the context of useReducer.

    • How do you define and use action types, and why are they beneficial?
  9. Demonstrate how you might use useReducer to manage the state of a form.

    • Provide an example where form actions are dispatched to the reducer to update the form state.
  10. Discuss potential use cases for useReducer in a real-world React application.

    • Highlight scenarios where the useReducer Hook is particularly useful for managing state.

Conclusion:

These questions cover various aspects of the useReducer Hook in React, from its basic usage to more advanced topics like handling complex state logic and action types.