React

React is a powerful library for building modern user interfaces. This page covers core React concepts such as components, props, state, hooks, lifecycle methods, context API, performance optimization, and reusable architecture patterns. You’ll also find essential React interview questions to strengthen your job preparation.

React Basics

Learn the fundamental concepts of React including JSX, Virtual DOM, and core principles used to build modern user interfaces.

Components

Understand how React components work, how to structure them, and how to reuse components effectively in applications.

State Management

Learn how state works in React and how to manage component data efficiently.

Props & Children

Understand how data is passed between components using props and the children pattern.

Lifecycle Methods

Learn component lifecycle concepts and how they translate to modern React with hooks.

Hooks (Basic)

Get started with React Hooks such as useState, useEffect, and useRef.

Hooks (Advanced)

Deep dive into advanced hooks and performance optimization techniques.

Forms & Controlled Components

Learn how to build forms using controlled and uncontrolled components in React.

Events & Handling

Understand how events work in React and how to handle user interactions.

Conditional Rendering

Learn different techniques for rendering UI conditionally in React.

Lists & Keys

Understand how to render lists efficiently and why keys are important.

Context API

Learn how to manage global state using React Context API.

Routing (React Router)

Learn how to implement routing and navigation in React applications.

Performance Optimization

Learn how to optimize React applications for better performance.

Error Handling

Understand how to handle errors gracefully in React applications.

Testing

Learn how to test React components and applications.

Styling

Explore different styling approaches available in React.

Advanced Patterns

Learn advanced design patterns used in React applications.

Portals & Refs

Understand how React Portals and refs work.

React with TypeScript

Learn how to use TypeScript with React for type-safe applications.

Suspense & Concurrent Mode

Explore React Suspense and concurrent rendering features.

React Internals

Understand how React works internally.

Common Interview Topics & Best Practices

Prepare for React interviews and learn industry best practices.