REACT CONCEPTS - rs-hash/Senior GitHub Wiki

Core Concepts and Fundamentals

  1. Explain the Virtual DOM in React.
  2. What are the differences between functional components and class components?
  3. How does React handle state management?
  4. What are props in React and how are they used?
  5. Explain the concept of controlled vs. uncontrolled components.
  6. What are higher-order components (HOCs) and when are they useful?
  7. Discuss the use of React Hooks and their advantages over class components.
  8. How does React Router work, and what are its key components?

State Management and Data Flow

  1. Compare and contrast local state vs. global state management (e.g., Redux, Context API).
  2. Explain the Flux architecture and its components.
  3. Discuss the role of reducers in state management libraries like Redux.
  4. How can you optimize performance in React applications, especially with large data sets?
  5. What are the benefits and drawbacks of using Redux for state management?

Component Architecture and Design Patterns

  1. Explain the concept of component composition and reusability.
  2. What are presentational components and container components, and how do they differ?
  3. Discuss strategies for handling component styling in React applications (e.g., CSS Modules, Styled Components).
  4. What are the key principles of component-based architecture, and how does React support them?

Testing and Quality Assurance

  1. Describe different types of testing in React (e.g., unit testing, integration testing).
  2. How do you test React components using libraries like Jest and Enzyme?
  3. What are the best practices for writing testable React code?
  4. Discuss strategies for ensuring code quality and maintainability in React projects.

Performance Optimization

  1. How can you improve the performance of React applications, especially in terms of rendering and data fetching?
  2. Discuss lazy loading and code splitting techniques in React.
  3. What are memoization and PureComponent, and how can they be used to optimize rendering?
  4. Explain the concept of virtualization and its importance in optimizing large lists in React.

Advanced Topics

  1. Discuss server-side rendering (SSR) and its benefits in React applications.
  2. What are React Suspense and React.lazy, and how do they improve code splitting?
  3. Explain the concept of error boundaries in React and how to handle errors gracefully.
  4. Discuss the use of React Context API for managing global state and avoiding prop drilling.

Project Experience and Real-World Scenarios

  1. Can you describe a complex React project you have worked on in the past? What challenges did you face, and how did you overcome them?
  2. How do you approach code reviews and maintain code quality in a team setting?
  3. Have you integrated third-party libraries or APIs with React applications? What was your experience?
  4. Can you discuss your experience with optimizing React applications for accessibility and SEO?

General Development and Tools

  1. Describe your experience with version control systems like Git and Git workflows (e.g., GitFlow).
  2. What development tools and IDEs do you use for React development, and why?
  3. How do you stay updated with the latest trends and best practices in React and front-end development?