React Course
Modern frontend engineering with React, Hooks, Routing, State Management & production UI systems.
Architecture
React Rendering Lifecycle
From user interaction to efficient DOM updates via the Virtual DOM and reconciliation.
Enterprise learning path
React Fundamentals
- 1React HomeNext up
React Home introduces React as a declarative, component-based UI library, covering component trees, React DOM, modern React 19.x practices, TypeScript, architecture, performance, security, accessibility, and interview preparation.
- 2Introduction to React
Introduction to React explains React as a declarative, component-based UI library, covering state-driven rendering, component trees, JSX, React DOM, React 19.x, architecture, performance, security, accessibility, and interview preparation.
- 3What is React?
What is React explains React in practical and technical terms as a declarative, component-based UI library, covering state-driven rendering, props, JSX, React DOM, reconciliation, React Compiler, React 19.x, enterprise architecture, performance, security, accessibility, and interview preparation.
- 4Why Developers Use React
Why Developers Use React explains why teams choose React for complex interactive applications, covering component architecture, declarative UI, predictable data flow, reuse, ecosystem flexibility, TypeScript, testing, enterprise scale, performance, trade-offs, and interview preparation.
- 5React vs Traditional JavaScript
React vs Traditional JavaScript compares imperative DOM programming with React's declarative component model, covering state synchronization, events, rendering, maintainability, performance, testing, TypeScript, migration strategy, architecture, and interview preparation.
- 6Installing React
Installing React explains modern React project setup with Node.js, npm, frameworks, Vite, TypeScript, React DOM, createRoot, development and production builds, DevTools, troubleshooting, security, enterprise architecture, and interview preparation.
- 7React Project Setup
React Project Setup explains modern React and TypeScript project organization with Vite, package configuration, source and public assets, environment variables, feature boundaries, Git, quality tooling, CI/CD, and enterprise architecture.
- 8Vite Introduction
Vite Introduction explains Vite as modern frontend development and build tooling, covering native ES modules, TypeScript and JSX transformation, HMR, React Fast Refresh, plugins, configuration, proxies, environment variables, production bundling, assets, Spring Boot integration, and enterprise architecture.
- 9React Folder Structure
React Folder Structure explains scalable frontend organization through feature boundaries, shared UI, pages, hooks, services, types, utilities, assets, dependency direction, co-location, team ownership, and enterprise architecture.
- 10Understanding Single Page Applications
Understanding Single Page Applications explains SPA navigation, client-side routing, the History API, API communication, state, performance, SEO, accessibility, security, deployment fallbacks, and enterprise architecture.
- 11React Developer Tools
React Developer Tools explains component-tree inspection, runtime props, state and hooks, React debugging workflows, render profiling, performance measurement, security boundaries, and enterprise troubleshooting.
- 12JSX Basics
JSX Basics explains JSX syntax, JavaScript expressions, attributes, fragments, events, conditional rendering, list keys, TypeScript type safety, transformation, and declarative React UI design.
- 13Rendering UI
Rendering UI explains React's initial render, createRoot, re-rendering from state and props, render and commit phases, reconciliation, purity, Strict Mode, identity, accessibility, and performance.
- 14React Best Practices
React Best Practices covers focused components, state ownership, pure rendering, effects, data flow, accessibility, security, testing, and evidence-based performance optimization.
- 15React Ecosystem Overview
React Ecosystem Overview explains how React fits with routing, state, server data, forms, styling, testing, frameworks, backend APIs, cloud infrastructure, and production tooling.
Components & JSX
- 16Introduction to Components
Introduction to Components explains React component fundamentals, composition, reusable UI, component trees, responsibilities, files, rendering, and maintainable component design.
- 17Functional Components
Functional Components explains modern React function components, JSX returns, props, state, Hooks, events, composition, exports, purity, accessibility, testing, and class-component differences.
- 18JSX Syntax
JSX Syntax explains JSX expressions, attributes, fragments, event handlers, conditional and list rendering, inline styles, accessibility, compilation, and common syntax mistakes.
- 19Props in React
Props in React explains parent-to-child data flow, prop values, destructuring, callbacks, children, composition, immutability, prop drilling, forwarding, and props versus state.
- 20Component Reusability
Component reusability in React: build once, reuse many times with props, children, and composition while avoiding over-engineering.
- 21Component Composition
Component composition in React: build complex UI by combining small focused components with children, layouts, slots, and meaningful boundaries.
- 22Conditional Rendering
Conditional rendering in React: use if, early returns, ternaries, &&, ||, ??, null, and UI states like loading, error, empty, and success.
- 23Lists & Keys
Lists and keys in React: render collections with map(), choose stable unique keys, avoid index/random keys, and handle empty, loading, and nested lists.
- 24Event Handling
Event handling in React: onClick, onChange, onSubmit, event objects, preventDefault, stopPropagation, callback props, and controlled form inputs.
- 25Forms in React
Forms in React: controlled inputs, form state objects, validation, checkboxes, radios, selects, submission, loading, and controlled vs uncontrolled patterns.
- 26Controlled Components
Controlled components in React: state as source of truth for inputs, checkboxes, selects, multi-field forms, validation, resets, and controlled vs uncontrolled.
- 27Styling Components
Styling React components: className, CSS Modules, inline styles, conditional classes, variants, themes, responsive CSS, and choosing a styling strategy.
- 28CSS Modules
CSS Modules in React: locally scoped .module.css styles, styles.className, conditional and dynamic classes, :global, and comparison with other styling approaches.
- 29Tailwind CSS Basics
Tailwind CSS basics for React: utility-first styling, spacing, flex/grid, hover/focus, responsive and dark variants, conditional classes, and reusable component patterns.
- 30Real UI Components
Real UI components in React: reusable Button, Card, Badge, Alert, Input, Modal, and Navbar with clear APIs, prop forwarding, composition, and accessibility.
React Hooks
- 31Introduction to Hooks
Introduction to React Hooks covers what Hooks are, why they replaced class-centric patterns, the use naming convention, built-in Hooks, custom Hooks, Rules of Hooks, and a practical mental model.
- 32useState
useState in React explains local component state, setters, functional updaters, snapshots, batching, immutability, arrays and objects, and when not to store derived values in state.
- 33useEffect
useEffect in React explains synchronizing components with external systems, dependency arrays, cleanup, Strict Mode, and avoiding Effects for ordinary calculations or event responses.
- 34useRef
useRef in React covers persistent mutable values, DOM references, previous values, third-party instances, and values that should persist without triggering renders.
- 35useMemo
useMemo in React explains caching expensive calculations, dependency arrays, referential stability, and when memoization helps versus when it adds needless complexity.
- 36useCallback
useCallback in React covers caching function references for memoized children, Hook dependencies, custom Hook APIs, and intentional performance optimization.
- 37useReducer
useReducer in React explains structured state transitions with actions and reducers, when to prefer it over useState, purity, and immutable updates.
- 38Custom Hooks
Custom Hooks in React teach extracting reusable stateful logic, the use naming convention, sharing logic versus sharing state, and designing clear Hook APIs.
- 39Hook Rules
Rules of Hooks explain why Hooks must be called at the top level of React functions, how call order works, and common conditional or nested call mistakes.
- 40Side Effects Management
Side effects management with Hooks covers identifying external systems, cleanup, data fetching patterns, subscriptions, and keeping Effects focused.
- 41Performance Optimization
Hook performance optimization covers measuring before optimizing, useMemo, useCallback, React.memo, and avoiding premature memoization.
- 42Hook Debugging
Hook debugging covers stale closures, dependency mistakes, infinite effect loops, DevTools techniques, and systematic ways to diagnose Hook bugs.
- 43Hook Best Practices
Hook best practices cover keeping state minimal, deriving values, using Effects for synchronization, naming custom Hooks clearly, and optimizing intentionally.
- 44Real Hook Examples
Real Hook examples combine useState, useEffect, useRef, useMemo, useCallback, useReducer, and custom Hooks into practical application patterns.
- 45Enterprise Hook Patterns
Enterprise Hook patterns cover scalable custom Hooks, separation of concerns, server versus UI state, composition, and production-ready architecture guidelines.
Routing & API Integration
- 46React Router Introduction
React Router Introduction is one of the foundational pieces of modern React engineering.
- 47BrowserRouter
BrowserRouter is one of the foundational pieces of modern React engineering.
- 48Routes & Route
Routes & Route is one of the foundational pieces of modern React engineering.
- 49Nested Routing
Nested Routing is one of the foundational pieces of modern React engineering.
- 50Dynamic Routes
Dynamic Routes is one of the foundational pieces of modern React engineering.
- 51Navigation Components
Navigation Components is one of the foundational pieces of modern React engineering.
- 52API Integration Basics
API Integration Basics is one of the foundational pieces of modern React engineering.
- 53Fetch API
Fetch API is one of the foundational pieces of modern React engineering.
- 54Axios Integration
Axios Integration is one of the foundational pieces of modern React engineering.
- 55Loading States
Loading States is one of the foundational pieces of modern React engineering.
- 56Error Handling
Error Handling is one of the foundational pieces of modern React engineering.
- 57Authentication Flow
Authentication Flow is one of the foundational pieces of modern React engineering.
- 58Protected Routes
Protected Routes is one of the foundational pieces of modern React engineering.
- 59API Optimization
API Optimization is one of the foundational pieces of modern React engineering.
- 60Real SaaS API Workflow
Real SaaS API Workflow is one of the foundational pieces of modern React engineering.
State Management
- 61State Management Basics
State Management Basics is one of the foundational pieces of modern React engineering.
- 62Local vs Global State
Local vs Global State is one of the foundational pieces of modern React engineering.
- 63Context API
Context API is one of the foundational pieces of modern React engineering.
- 64Context Providers
Context Providers is one of the foundational pieces of modern React engineering.
- 65Redux Introduction
Redux Introduction is one of the foundational pieces of modern React engineering.
- 66Redux Toolkit
Redux Toolkit is one of the foundational pieces of modern React engineering.
- 67Zustand Basics
Zustand Basics is one of the foundational pieces of modern React engineering.
- 68Async State Handling
Async State Handling is one of the foundational pieces of modern React engineering.
- 69React Query Basics
React Query Basics is one of the foundational pieces of modern React engineering.
- 70API Caching
API Caching is one of the foundational pieces of modern React engineering.
- 71Optimistic UI
Optimistic UI is one of the foundational pieces of modern React engineering.
- 72State Debugging
State Debugging is one of the foundational pieces of modern React engineering.
- 73Enterprise State Architecture
Enterprise State Architecture is one of the foundational pieces of modern React engineering.
- 74Performance Optimization
Performance Optimization is one of the foundational pieces of modern React engineering.
- 75Real Production State Systems
Real Production State Systems is one of the foundational pieces of modern React engineering.
Advanced React Engineering
- 76Virtual DOM
Virtual DOM is one of the foundational pieces of modern React engineering.
- 77React Reconciliation
React Reconciliation is one of the foundational pieces of modern React engineering.
- 78React Fiber Architecture
React Fiber Architecture is one of the foundational pieces of modern React engineering.
- 79Lazy Loading
Lazy Loading is one of the foundational pieces of modern React engineering.
- 80Code Splitting
Code Splitting is one of the foundational pieces of modern React engineering.
- 81Suspense
Suspense is one of the foundational pieces of modern React engineering.
- 82Error Boundaries
Error Boundaries is one of the foundational pieces of modern React engineering.
- 83Memoization
Memoization is one of the foundational pieces of modern React engineering.
- 84Render Optimization
Render Optimization is one of the foundational pieces of modern React engineering.
- 85Accessibility (a11y)
Accessibility (a11y) is one of the foundational pieces of modern React engineering.
- 86Frontend Security
Frontend Security is one of the foundational pieces of modern React engineering.
- 87XSS Prevention
XSS Prevention is one of the foundational pieces of modern React engineering.
- 88React Testing
React Testing is one of the foundational pieces of modern React engineering.
- 89Component Testing
Component Testing is one of the foundational pieces of modern React engineering.
- 90Enterprise Frontend Patterns
Enterprise Frontend Patterns is one of the foundational pieces of modern React engineering.
Production Frontend Architecture
- 91Scalable Folder Structure
Scalable Folder Structure is one of the foundational pieces of modern React engineering.
- 92Feature-Based Architecture
Feature-Based Architecture is one of the foundational pieces of modern React engineering.
- 93Design Systems
Design Systems is one of the foundational pieces of modern React engineering.
- 94Component Libraries
Component Libraries is one of the foundational pieces of modern React engineering.
- 95Authentication Systems
Authentication Systems is one of the foundational pieces of modern React engineering.
- 96JWT Frontend Flow
JWT Frontend Flow is one of the foundational pieces of modern React engineering.
- 97Frontend Logging
Frontend Logging is one of the foundational pieces of modern React engineering.
- 98Error Monitoring
Error Monitoring is one of the foundational pieces of modern React engineering.
- 99SEO Optimization
SEO Optimization is one of the foundational pieces of modern React engineering.
- 100Next.js Basics
Next.js Basics is one of the foundational pieces of modern React engineering.
- 101SSR vs CSR
SSR vs CSR is one of the foundational pieces of modern React engineering.
- 102Frontend Deployment
Frontend Deployment is one of the foundational pieces of modern React engineering.
- 103CI/CD Frontend Workflow
CI/CD Frontend Workflow is one of the foundational pieces of modern React engineering.
- 104Production Optimization
Production Optimization is one of the foundational pieces of modern React engineering.
- 105Enterprise Frontend Systems
Enterprise Frontend Systems is one of the foundational pieces of modern React engineering.
Practice & Interview Preparation
- 106React Exercises
React Exercises is one of the foundational pieces of modern React engineering.
- 107UI Challenges
UI Challenges is one of the foundational pieces of modern React engineering.
- 108Hook Challenges
Hook Challenges is one of the foundational pieces of modern React engineering.
- 109Routing Challenges
Routing Challenges is one of the foundational pieces of modern React engineering.
- 110State Management Challenges
State Management Challenges is one of the foundational pieces of modern React engineering.
- 111React Interview Questions
React Interview Questions is one of the foundational pieces of modern React engineering.
- 112Mock Frontend Interviews
Mock Frontend Interviews is one of the foundational pieces of modern React engineering.
- 113Real Frontend Scenarios
Real Frontend Scenarios is one of the foundational pieces of modern React engineering.
- 114Debugging Challenges
Debugging Challenges is one of the foundational pieces of modern React engineering.
- 115Performance Optimization Tasks
Performance Optimization Tasks is one of the foundational pieces of modern React engineering.
- 116SaaS Dashboard Project
SaaS Dashboard Project is one of the foundational pieces of modern React engineering.
- 117E-Commerce Frontend Project
E-Commerce Frontend Project is one of the foundational pieces of modern React engineering.
- 118Portfolio Project
Portfolio Project is one of the foundational pieces of modern React engineering.
- 119Enterprise Frontend Assessments
Enterprise Frontend Assessments is one of the foundational pieces of modern React engineering.
- 120Production React Case Studies
Production React Case Studies is one of the foundational pieces of modern React engineering.