React.js (9 questions)
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Q1. What is React.js?
Q2. How react decide when to re-render?
Q3. How do you improve React rendering performance.
Q4. What is virtual DOM in React.js?
Q5. What is hooks in React.js? Give some examples.
Q6. What are the differences between class component and functional component in React.js?
Q7. What is dynamic component in React, and how does it affects the rendering of React app?
Q8. What is useCallback in React?
Q9. What is React Context API, and what is it used for?
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About this question set
React is a free and open-source front-end JavaScript library for building user interfaces based on components. It is maintained by Meta and a community of individual developers and companies. React can be used to develop single-page, mobile, or server-rendered applications with frameworks like Next.js.
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