- What is React.js, and what are its key features?
- Explain the difference between functional components and class components in React.
- What is JSX? How does it differ from HTML?
- What are props in React? How are they used?
- What is state in React? How is it different from props?
- Explain the component lifecycle methods in React.
- What is the significance of setState() in React?
- What are React hooks? Explain some commonly used hooks.
- How do you handle events in React?
- What is the virtual DOM in React? How does it improve performance?
- Explain the concept of conditional rendering in React.
- What is the purpose of keys in React lists? Why are they important?
- How do you pass data between components in React?
- What are higher-order components (HOCs) in React?
- What is React Router? How do you implement routing in a React application?
- Explain the difference between controlled and uncontrolled components in React.
- How do you handle forms in React? Discuss form validation.
- What is Redux? Why would you use it with React?
- Explain the concept of context in React. When would you use it?
- How do you optimize performance in a React application?
