⚛️ React Basics

Master the fundamentals of React, the popular JavaScript library for building user interfaces

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React Basics Curriculum

12
React Units
~60
Core Concepts
25+
Interactive Projects
Modern
React Features
1

React Introduction

Learn what React is and why it's popular for building user interfaces.

  • What is React?
  • React ecosystem
  • Virtual DOM
  • Component-based architecture
  • React vs other frameworks
  • Setting up development environment
  • Create React App
  • React developer tools
2

JSX and Elements

Master JSX syntax and understand how React elements work.

  • JSX syntax
  • Embedding expressions
  • JSX attributes
  • JSX children
  • React elements
  • Rendering elements
  • JSX compilation
  • Fragment usage
3

Components

Create reusable components using functions and classes.

  • Function components
  • Class components
  • Component composition
  • Component naming
  • Import and export
  • Component file structure
  • Default exports
  • Component reusability
4

Props

Pass data between components using props and handle different data types.

  • Props concept
  • Passing props
  • Props destructuring
  • Default props
  • PropTypes validation
  • Children prop
  • Props vs attributes
  • Props best practices
5

State and useState

Manage component state using the useState hook for dynamic interfaces.

  • State concept
  • useState hook
  • State updates
  • Multiple state variables
  • State vs props
  • Functional updates
  • State initialization
  • State best practices
6

Event Handling

Handle user interactions and events in React components.

  • Event handlers
  • SyntheticEvent
  • Event binding
  • Passing arguments
  • Preventing default
  • Event delegation
  • Form events
  • Custom events
7

Conditional Rendering

Dynamically show or hide content based on state and conditions.

  • If statements
  • Ternary operators
  • Logical operators
  • Conditional components
  • Switch statements
  • Guards and fallbacks
  • Loading states
  • Error boundaries
8

Lists and Keys

Render dynamic lists of data and understand the importance of keys.

  • Rendering lists
  • Map function
  • Keys importance
  • Key selection
  • Index as key
  • Unique identifiers
  • List performance
  • Dynamic lists
9

Forms and Controlled Components

Create forms with controlled inputs and handle form submission.

  • Controlled components
  • Uncontrolled components
  • Form inputs
  • Form validation
  • Form submission
  • Multiple inputs
  • Textarea and select
  • Form libraries
10

useEffect Hook

Manage side effects and lifecycle events with the useEffect hook.

  • Effect concept
  • useEffect syntax
  • Effect dependencies
  • Cleanup functions
  • Multiple effects
  • API calls
  • Timers and intervals
  • Effect optimization
11

Component Lifecycle

Understand component lifecycle phases and when to use different hooks.

  • Lifecycle phases
  • Mounting phase
  • Updating phase
  • Unmounting phase
  • Lifecycle methods vs hooks
  • Component updates
  • Performance optimization
  • Memory management
12

Styling in React

Apply styles to React components using various styling approaches.

  • Inline styles
  • CSS classes
  • CSS modules
  • Styled components
  • CSS-in-JS
  • Dynamic styling
  • Conditional classes
  • Styling best practices

Unit 1: React Introduction

Learn what React is and why it's popular for building user interfaces.

What is React?

Understand React's purpose and core philosophy in modern web development.

Library UI Components Virtual DOM Declarative
React is a JavaScript library for building user interfaces, especially single-page applications. It allows you to create reusable UI components that manage their own state and compose them to make complex UIs.
// Simple React component
function Welcome(props) {
  return <h1>Hello, {props.name}!</h1>;
}

// Using the component
const element = <Welcome name="React" />;

// React handles the DOM updates efficiently
React Renders: Hello, React!

Virtual DOM

Learn how React's Virtual DOM improves performance and developer experience.

Virtual DOM Benefits:
• Faster updates through efficient diffing algorithm
• Predictable UI updates with declarative syntax
• Better performance with batched updates
• Cross-browser compatibility handled automatically
• Easier testing and debugging
Virtual DOM
JavaScript Objects
Lightweight representation
Real DOM
Browser Elements
Heavy operations

Component-Based Architecture

Understand how React encourages building UIs with reusable components.

Component Benefits:
• Reusability across different parts of your app
• Easier testing of isolated functionality
• Better organization and maintainability
• Encapsulation of logic and presentation
App
├── Header
│   ├── Logo
│   └── Navigation
├── Main
│   ├── Sidebar
│   └── Content
└── Footer

Unit 2: JSX and Elements

Master JSX syntax and understand how React elements work.