ReactJS Path

1. Basic Concepts:
   • Virtual DOM
   • JSX (JavaScript XML)
   • Components
   • Props and state
   • Lifecycle methods
2. Componentization:
   • Functional components vs. Class components
   • Component composition
   • Higher-order components (HOCs)
   • Render props
3. State Management:
   • useState and useEffect hooks
   • Context API
   • Redux or MobX for more complex state management
4. Routing:
   • React Router for client-side routing
   • Nested routes
   • Route parameters and query strings
5. Forms:
   • Controlled vs. uncontrolled components
   • Form handling and validation
6. HTTP Requests:
   • Fetch API or Axios for making HTTP requests
   • Handling asynchronous data fetching
7. Styling:
   • CSS modules
   • Styled-components or Emotion for CSS-in-JS
8. Testing:
   • Unit testing with Jest and Enzyme or React Testing Library
   • Integration testing
   • Snapshot testing
9. Performance Optimization:
   • Code splitting
   • Memoization
   • Virtualized lists
10. Deployment:
    • Create React App (CRA) for quick setups
    • Deployment strategies for React applications (e.g., AWS, Heroku, Netlify)
11. Advanced Topics:
    • Server-side rendering (SSR) with Next.js or Gatsby
    • React Suspense and React.lazy for code splitting
    • Error boundaries

Make sure to review and practice these topics to feel confident in your React.js interviews!