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React Advanced Concepts – React interview questions

React Advanced Concepts interview questions for placements and exams.

Subject: ReactDifficulty: Mixed15 questions in this set

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React

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React – React Advanced Concepts questions (15)

Go through each question and its explanation. Use this set as a focused practice pack for React.

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1. What is prop drilling in React?

Difficulty: MediumType: SubjectiveTopic: Data Flow

Prop drilling happens when you pass data through many nested components just to reach a deeply nested child. It can make code harder to maintain and understand.

2. What are fragments and why are they used?

Difficulty: EasyType: SubjectiveTopic: Fragments

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React Advanced Concepts – React interview questions

Set overview

React – React Advanced Concepts questions (15)

1. What is prop drilling in React?

2. What are fragments and why are they used?

Continue your preparation

3. What are portals in React?

4. What are some ways to avoid prop drilling?

5. How does React Context API help in managing global data?

6. What are Higher-Order Components (HOCs)?

7. Compare HOCs and custom hooks.

8. What are render props in React?

9. What are error boundaries and how do they work?

10. In which lifecycle methods can you catch errors using an error boundary?

11. What is React reconciliation?

12. How does React decide when to re-render a component?

13. What are Pure Components and what is memoization (React.memo, useMemo, useCallback)?

14. Explain the concept of context in React.

15. How to implement an error boundary class?

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React Advanced Concepts – React interview questions

Set overview

1. What is prop drilling in React?

2. What are fragments and why are they used?

Continue your preparation

3. What are portals in React?

4. What are some ways to avoid prop drilling?

5. How does React Context API help in managing global data?

6. What are Higher-Order Components (HOCs)?

7. Compare HOCs and custom hooks.

8. What are render props in React?

9. What are error boundaries and how do they work?

10. In which lifecycle methods can you catch errors using an error boundary?

11. What is React reconciliation?

12. How does React decide when to re-render a component?

13. What are Pure Components and what is memoization (React.memo, useMemo, useCallback)?

14. Explain the concept of context in React.

15. How to implement an error boundary class?

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