10 interview questions regarding ReactJS useMemo() Hook
Here are 10 interview questions specifically focusing on the
useMemo hook in React:
What is the purpose of the
useMemohook in React?
Explain the difference between
useEffect. When would you choose one over the other?
useMemooptimize performance in a React application?
Can you provide an example of a scenario where using
useMemowould be beneficial?
What are the dependencies in the dependency array of the
useMemohook, and why are they important?
useMemohelp in preventing unnecessary re-computation of values in functional components?
What is memoization, and how is it related to the
Can you explain a situation where using
useMemomight not be appropriate or effective?
How do you use
useMemoto memoize the result of a function in React?
In what scenarios would you consider using both
These questions cover various aspects of the
useMemo hook, including its purpose, performance optimization, dependency tracking, and practical use cases. They aim to assess the candidate's understanding of memoization and how it can be leveraged in React applications.