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React.js Master Course

40-60 Days | Beginner → Advanced → Industry-Ready

React 18+ | Hooks | Redux Toolkit | Router v6 | TypeScript | Testing | Performance

W1-2
WEEK 1-2: React Foundations + Modern JavaScript
1-2 Introduction to React
  • What is React? Why React in modern web development?
  • SPA vs MPA, Virtual DOM vs Real DOM
  • React Fiber architecture & React 18 new features
  • Component-based UI architecture
  • Setting up environment: Node.js, npm, Vite, CRA
  • Creating first React App & folder structure
Start Learning →
3-5 Modern JavaScript ES6-ES2023 Review
  • var vs let vs const, Arrow functions
  • Template literals, Destructuring
  • Spread & Rest operators, Default parameters
  • Array methods (map, filter, reduce, find, some, every)
  • Promises + async/await + error handling
  • Modules, Classes, Optional chaining
  • Debouncing & Throttling
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6-8 JSX + Components
  • Deep understanding of JSX & why it exists
  • JSX rules and pitfalls
  • Functional vs Class components
  • Creating reusable components
  • Component re-rendering cycle & composition
  • Default props & propTypes
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9-11 Props & State
  • Immutable data concept
  • Props drilling problem
  • State vs Props difference
  • Local component state & updating correctly
  • Multiple state updates batching
  • useState & useEffect (simple usage)
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12-13 Handling Events + Forms
  • Synthetic events & Event binding
  • Controlled vs Uncontrolled components
  • Form validation patterns
  • Input management for large forms
  • Handling checkboxes, radios, selects
  • Formik + Yup introduction
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W3-4
WEEK 3-4: Intermediate React + APIs + UI
14-16 Lists, Keys & Conditional Rendering
  • Keys: why unique keys matter
  • Common mistakes ("index as key" problem)
  • Rendering dynamic lists
  • Map vs forEach in rendering
  • Conditional rendering patterns
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17-19 Component Lifecycle
  • Class lifecycle methods
  • Why lifecycle changed in React 16+
  • Deep dive into useEffect
  • Cleanup function & Dependency array traps
  • Avoiding infinite loops
  • useEffect vs useLayoutEffect
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20-21 Styling in React
  • Global CSS & CSS Modules
  • Styled-components & Emotion
  • Tailwind CSS (full integration)
  • Material UI / Chakra UI
  • Responsive UI patterns & Dark mode
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22-24 API Integration
  • Fetch API & Axios
  • GET / POST / PUT / DELETE requests
  • Error handling & Loading states
  • Skeleton UI & API retry patterns
  • AbortController for cancelling requests
  • Debounced API search bar
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W5-6
WEEK 5-6: Advanced State Management
25-26 Context API
  • Creating & providing context
  • useContext deep dive
  • Avoiding re-render issues
  • When to use context vs Redux
  • Global theme & auth management
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27-30 Redux Toolkit (Modern Redux)
  • Why Redux Toolkit replaced old Redux
  • createSlice, createReducer, configureStore
  • Async Thunks & Data caching
  • RTK Query (full backend integration)
  • Normalizing state & Immutable updates
  • Redux DevTools & Enterprise structure
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31 Redux Middleware & Data Optimization
  • Concept of middleware
  • Custom middleware & Thunk in-depth
  • Logging & error handling middleware
  • Reselect for optimized selectors
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W7-8
WEEK 7-8: Routing + Performance + Patterns
32-33 React Router v6
  • Creating routes & Nested routes
  • Layout routes & Route parameters
  • Search params & Protected routes
  • Lazy loading routes
  • Programmatic navigation
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34-35 Code Splitting & Lazy Loading
  • React.lazy & Suspense
  • Dynamic imports
  • Route-based code splitting
  • Image optimization
  • Chunk splitting best practices
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36-38 Performance Optimization
  • React.memo detailed
  • useCallback & useMemo deep dive
  • Avoiding unnecessary re-renders
  • Profiler tool
  • Windowing large lists (React Window)
  • Production performance patterns
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W9-10
WEEK 9-10: Hooks, Testing, Security & Patterns
39-41 Advanced Hooks
  • useReducer
  • useRef (mutable values + DOM refs)
  • useImperativeHandle
  • useLayoutEffect
  • Custom hooks (complex reusable logic)
  • Deep custom hooks case studies
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42-44 Testing React Applications
  • Jest basics
  • React Testing Library
  • Unit testing & Integration testing
  • Mocking APIs
  • Snapshot testing
  • E2E Testing (Playwright / Cypress)
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45 Advanced Component Patterns
  • Higher-Order Components (HOCs)
  • Render props
  • Compound components
  • Provider pattern
  • State reducer pattern
  • Headless components pattern
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W11-12
WEEK 11-12: Real-World Topics (Industry-Level)
46-48 Authentication
  • JWT authentication flow
  • LocalStorage / Cookies / HttpOnly cookie
  • Login, Signup, Logout
  • Protected routes
  • Refresh tokens and session handling
  • Firebase Auth / Auth0
Start Learning →
49-50 File Uploads + Forms + Error Systems
  • Single & multiple file upload
  • Drag-and-drop uploads
  • Client-side validation architecture
  • Global error boundary
  • Reusable error UI
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51-52 Working With Realtime Data
  • WebSockets
  • Socket.io
  • EventSource / SSE
  • Real-time chat implementation
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53-54 React + TypeScript
  • Types for props & states
  • Interfaces & types
  • Redux with TypeScript
  • Creating typed custom hooks
  • Best practices
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55-56 Backend Integration
  • Full MERN integration
  • CRUD operations & Pagination
  • Authentication + Authorization
  • Secure API integration patterns
  • Error handling, retries, caching
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57 React Security
  • XSS protection & CSRF
  • Sanitizing input
  • Safe state updates
  • Avoiding memory leaks
  • React Helmet for SEO + security headers
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58 Deployment
  • Deploy on Netlify, Vercel
  • Deploy on Firebase Hosting
  • Build production bundle
  • Environment variables
  • CI/CD basics
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59-60 Capstone Project + Interview Prep
  • E-commerce app
  • Dashboard + Analytics
  • Social media clone
  • AI/ChatGPT integrated app
  • Top 100 React Interview Questions
  • System design for frontend
Start Learning →
Expert Redux
  • Redux
  • Redux Toolkit
  • Redux todo app
  • Redux guide
Redux Guide → Redux Todo App → Redux Master →

Final Result - You Will Become: