React

Reusable Components

Component-based architecture that allows creating reusable and modular UI elements, facilitating maintenance and scalability.

Virtual DOM

System that optimizes performance by minimizing direct DOM manipulations, updating only elements that have changed.

JSX

Syntax that allows writing HTML directly in JavaScript, making code more readable and facilitating component creation.

Unidirectional Data Flow

Predictable data flow from parent to child, facilitating debugging and making applications more predictable and maintainable.

Rich Ecosystem

Large community and ecosystem of libraries, tools and frameworks that extend React's functionality.

React Native

Enables developing native mobile applications using the same principles and components as React for web.

Hooks

System that allows using state and other React features in functional components, simplifying code and improving reusability.

Context API

Global state management system that allows sharing data between components without prop drilling, ideal for themes and authentication.

React Router

Library for implementing navigation in single-page applications (SPAs) with dynamic routes and parameters.

Error Boundaries

Components that catch JavaScript errors anywhere in the component tree and display a fallback UI.

Portals

Feature that allows rendering components outside their parent DOM container, useful for modals and tooltips.

React.memo

Optimization that prevents unnecessary re-renders of components when their props haven't changed.

Redux

Predictable state management library for JavaScript applications, ideal for complex applications with global state.

React Router

Declarative routing library for React that allows creating single-page applications with navigation.

Styled Components

Library that allows writing CSS in JavaScript with styled components that encapsulate styles and logic.

Material-UI

React component library that implements Google's Material Design with ready-to-use components.

Axios

Promise-based HTTP client for making API requests from React applications in a simple way.

React Query

Server state management library that simplifies data fetching, caching and synchronization.

🔒 Performance

• • Use React.memo for optimization
• • Implement lazy loading
• • Optimize re-renders
• • Use useMemo and useCallback
• • Code splitting with React.lazy

⚡ Component Structure

• • Small and focused components
• • Separate logic from presentation
• • Use composition over inheritance
• • Consistent naming conventions
• • Organize by functionality

📁 State Management

• • Use Context API for global state
• • Redux for complex applications
• • Local state when possible
• • Immutability in updates
• • Normalize data structure

🔄 Testing

• • Jest for unit testing
• • React Testing Library
• • Component testing
• • Custom hooks testing
• • Integration testing

Single Page Applications

Complex SPAs with dynamic navigation, advanced state management and interactive user interfaces.

Dashboards and Control Panels

Administrative interfaces with charts, dynamic tables, complex filters and real-time updates.

E-commerce Applications

Online stores with dynamic shopping cart, product filters, user management and integrated payments.

Social Networks

Social platforms with dynamic feeds, real-time comments, notifications and content management.

Productivity Applications

Collaborative work tools, document editors, task managers and communication applications.

Mobile Applications

Native apps for iOS and Android using React Native with the same codebase and components.

Is React a framework or a library?

React is a library, not a complete framework. It focuses on the view layer and requires additional libraries for functionalities like routing, state management and testing.

How long does it take to learn React?

For basic concepts: 2-4 weeks. For intermediate level: 2-3 months. For advanced level: 6-12 months with constant practice and real projects.

Is React better than Vue or Angular?

It depends on the project. React is excellent for complex applications and large teams. Vue is ideal for small and medium projects. Angular is better for very large enterprise applications.

Is React slow?

No, React is very fast thanks to the Virtual DOM. However, performance depends on implementation. With good practices, React can be very efficient.

What is JSX?

JSX is a syntax extension for JavaScript that allows writing HTML directly in JavaScript code. React converts it to JavaScript function calls.

When to use Hooks vs Class Components?

Hooks are the modern and recommended way. Class Components are maintained for compatibility, but Hooks offer better performance and cleaner code.