Complete React.js Course: Topics and Steps

1. Introduction to React

• What is React.js?
• Features and advantages of React.
• Understanding SPA (Single Page Application).
• Setting up the development environment.
• Installing Node.js and npm.
• Creating your first React application using create-react-app.

2. React Fundamentals

• Components: Functional and Class Components.
• JSX: Syntax and usage.
• Props: Passing data between components.
• State: Managing component data.
• Event Handling in React.

3. React Advanced Topics

• Lifecycle Methods (Class Components).
• Hooks:
  • useState
  • useEffect
  • useContext
  • useRef
  • useReducer
• Handling Forms and Inputs.
• Conditional Rendering.
• Lists and Keys.
• Context API for state management.

4. Styling in React

• Inline CSS.
• CSS Modules.
• Styled-components.
• Using third-party libraries like Material-UI or Bootstrap.

5. Working with APIs

• Fetching data using fetch and axios.
• Handling API responses and errors.
• Displaying API data in components.
• Sending data to APIs (POST, PUT, DELETE).

6. Routing with React Router

• Installing React Router.
• Setting up routes.
• Dynamic Routing.
• Nested Routes.
• Navigation using Link and useNavigate.
• Route parameters and query strings.

7. State Management

• Local State Management.
• Global State Management with Context API.
• Introduction to Redux:
  • Store, Actions, and Reducers.
  • Dispatching actions and updating state.
  • Using useSelector and useDispatch.
  • Redux Toolkit basics.

8. Optimizing Performance

• React Memo.
• useMemo and useCallback.
• Lazy Loading Components (React.lazy and Suspense).
• Code Splitting.
• Avoiding unnecessary re-renders.

9. Testing in React

• Introduction to testing libraries: Jest and React Testing Library.
• Writing unit tests for components.
• Snapshot Testing.
• Mocking API calls.
• End-to-End Testing with Cypress.

10. Advanced Concepts

• Higher-Order Components (HOCs).
• Render Props.
• Portals.
• Error Boundaries.
• Refs and Controlled Components.

11. React with TypeScript

• Setting up React with TypeScript.
• Using TypeScript for props and state.
• Typing hooks and components.

12. Building Real-World Projects

• Developing reusable components.
• State and data flow in a project.
• Integrating third-party libraries.
• Implementing authentication and authorization.
• Handling form validation with libraries like Formik or React Hook Form.

13. Deployment

• Building a production-ready React app.
• Hosting React apps on platforms like Netlify, Vercel, or AWS.
• Configuring CI/CD pipelines.

This roadmap provides a structured approach to mastering React.js and building real-world applications.