React JS

1. Introduction to React

What is React
Why use React
History of React
Virtual DOM
Real DOM vs Virtual DOM
Single Page Applications (SPA)
React ecosystem overview
React vs Angular vs Vue
Course project overview

2. Setting Up the Development Environment

Installing Node.js and npm
Creating a React application with Vite
Project folder structure
Using Visual Studio Code
Development server
Production build
ESLint and Prettier setup

3. JSX Fundamentals

What is JSX
JSX syntax
Embedding JavaScript expressions
JSX rules
Fragments
Rendering elements
Conditional rendering in JSX

4. Components

Function components
Component structure
Creating reusable components
Exporting and importing components
Component composition
Best practices for component design

5. Props

Passing props
Default props
Children prop
Destructuring props
Prop drilling
Reusable component patterns

6. State Management with useState

What is state
Creating state variables
Updating state
State immutability
Managing multiple state values
Object and array state

7. Event Handling

Click events
Keyboard events
Mouse events
Form events
Passing arguments to event handlers
Preventing default behavior

8. Conditional Rendering

if statements
Ternary operator
Logical AND operator
Switch statements
Conditional components

9. Rendering Lists

map() method
Keys in React
Dynamic lists
Filtering data before rendering
Nested lists

10. Forms

Controlled components
Input fields
Textarea
Select menus
Checkboxes
Radio buttons
Form submission
Basic validation

11. Styling React Applications

CSS files
Inline styles
CSS Modules
Styled Components overview
Tailwind CSS overview
Bootstrap integration

12. React Hooks

Introduction to Hooks
Rules of Hooks
useState
useEffect
useRef
useMemo
useCallback
useContext

13. useEffect in Depth

Component lifecycle
Running side effects
Dependency array
Cleanup functions
Fetching data
Timers and intervals

14. Component Lifecycle

Mounting
Updating
Unmounting
Lifecycle with Hooks
Common lifecycle scenarios

15. React Router

Installing React Router
BrowserRouter
Routes
Route
Link
NavLink
Nested routes
Route parameters
Protected routes
404 pages

16. Context API

Creating context
Providing data
Consuming context
Global state management
Theme switching example

17. Working with APIs

Fetching data with Fetch API
Using Axios
Loading indicators
Error handling
Displaying API data
Pagination
Search functionality

18. CRUD Operations

Create records
Read records
Update records
Delete records
Connecting to REST APIs

19. Custom Hooks

Creating custom hooks
Reusing logic
Organizing hooks
Best practices

20. Performance Optimization

React.memo()
useMemo()
useCallback()
Lazy loading
Code splitting
Optimizing rendering

21. Advanced Hooks

useReducer
useLayoutEffect
useImperativeHandle
useId
useTransition
useDeferredValue

22. State Management

Component state
Lifting state up
Context API
Redux Toolkit overview
Actions
Reducers
Store
Selectors

23. Authentication

Login system
JWT Authentication
Protected routes
Role-based authorization
Token storage
Logout functionality

24. File Uploads

Uploading files
Image preview
Drag and drop uploads
Upload progress
Connecting to backend APIs

25. Error Handling

Error boundaries
Handling API errors
User-friendly messages
Global error handling

26. React Best Practices

Folder structure
Component organization
Naming conventions
Reusable components
Code splitting
Accessibility (A11y)
Performance optimization

27. Testing React Applications

Introduction to testing
React Testing Library
Jest basics
Testing components
Testing hooks
Mocking API requests

28. Deployment

Production build
Environment variables
Deploying to Netlify
Deploying to Vercel
Deploying to Firebase
Deploying to IIS

29. Building Real UI Components

Navigation bar
Sidebar
Hero section
Cards
Modal dialog
Accordion
Tabs
Image slider
Dashboard layout

30. Mini Projects

To-Do List
Weather App
Movie Search App
Notes App
Expense Tracker
Quiz Application
E-Commerce Product Catalog

31. Final Project

Students will build a complete production-ready React application that includes:

Authentication and authorization
Responsive user interface
CRUD operations
REST API integration
React Router navigation
Context API or Redux Toolkit state management
Form validation
File upload functionality
Reusable components
Performance optimization
Deployment to a live server