Learn React - 10 Code Examples & CST Typing Practice Test
React is a declarative, component-based JavaScript library for building user interfaces, primarily for single-page applications. It allows developers to create reusable UI components and manage application state efficiently.
Learn REACT with Real Code Examples
Updated Nov 21, 2025
Learning Path
Learn JSX and component structure
Understand props and state
Practice hooks (useState, useEffect)
Learn routing and SPA patterns
Integrate with state management and APIs
Skill Improvement Plan
Week 1: JSX and functional components
Week 2: State and props
Week 3: Event handling and forms
Week 4: Hooks and side effects
Week 5: Routing, context, and advanced patterns
Interview Questions
What is the difference between class and functional components?
Explain React hooks and use cases
What is the virtual DOM?
How do props and state differ?
Explain the concept of lifting state up
Cheat Sheet
<MyComponent /> - renders component
useState(initialValue) - manage state
useEffect(fn, [deps]) - side effects
props - pass data from parent
React Router: <Route path='/'> for routing
Books
The Road to React by Robin Wieruch
Learning React by Alex Banks & Eve Porcello
React Up & Running by Stoyan Stefanov
Fullstack React by Accomazzo et al.
React Design Patterns and Best Practices by Michele Bertoli
Tutorials
React official tutorial
FreeCodeCamp React course
Codecademy React lessons
Scrimba React courses
Fullstackopen React modules
Official Docs
https://reactjs.org/docs/getting-started.html
https://react.dev
https://reactjs.org/community/support.html
Community Links
Stack Overflow React tag
Reddit r/reactjs
Reactiflux Discord
React GitHub discussions
Various online blogs and YouTube channels
Community Support
React official documentation
Stack Overflow React tag
Reddit r/reactjs
Reactiflux Discord community
Various online tutorials and YouTube channels
Frequently Asked Questions about React
What is React?
React is a declarative, component-based JavaScript library for building user interfaces, primarily for single-page applications. It allows developers to create reusable UI components and manage application state efficiently.
What are the primary use cases for React?
Single-page web applications (SPAs). Dynamic user interfaces for web apps. Mobile apps via React Native. Reusable component libraries. Interactive dashboards and admin panels
What are the strengths of React?
Reusable and maintainable components. High performance with virtual DOM. Large community and ecosystem. Rich tooling and developer support. Supports both web and mobile (React Native)
What are the limitations of React?
Requires build tools (Webpack, Babel) for JSX. Learning curve for hooks and state management. Not a full framework (needs routing, state libraries). Frequent updates may require learning new APIs. SEO optimization requires server-side rendering or frameworks like Next.js
How can I practice React typing speed?
CodeSpeedTest offers 10+ real React code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.