10 interview questions regarding ReactJS custom Hook
Here are 10 interview questions related to React custom hooks:
What is a custom hook in React?
- Explain the concept of custom hooks and their role in React applications.
How do you create a custom hook in React?
- Describe the process of creating a custom hook and when you might use one.
What are the naming conventions for custom hooks?
- Explain how custom hooks should be named and why it's important to follow conventions.
Can you share stateful logic between components using custom hooks?
- Discuss how custom hooks enable the sharing of stateful logic between different React components.
What is the difference between a custom hook and a regular function?
- Highlight the distinctions between a custom hook and a standard JavaScript function.
How do you handle side effects in custom hooks?
- Discuss the patterns for handling side effects within custom hooks, such as using the
useEffect
hook.
- Discuss the patterns for handling side effects within custom hooks, such as using the
Explain the concept of dependency injection in custom hooks.
- Describe how dependency injection can be achieved in custom hooks and its advantages.
Can you provide an example of a real-world use case for a custom hook?
- Demonstrate your understanding by giving a practical example of when and how you might use a custom hook.
What are the best practices for testing custom hooks?
- Discuss strategies and best practices for testing custom hooks to ensure their reliability.
How do you share custom hooks between different projects?
- Explore methods for sharing and reusing custom hooks across multiple React projects.
Conclusion:
These questions are designed to evaluate a candidate's understanding of React custom hooks, their usage, best practices, and potential scenarios where custom hooks can be beneficial.