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React

Also known as: ReactJS, React.js

Quick Definition

React is a JavaScript library for building fast, component-based user interfaces.

Expanded Explanation

Created by Meta, React lets developers describe UIs as reusable components that update efficiently when data changes. Its declarative model, hooks API, and vast ecosystem make it the most widely used front-end library today.

Real-world Applications

Single-page applications
Progressive web apps
Design systems and component libraries
Cross-platform apps with React Native
Advantages
  • Component reusability
  • Huge ecosystem and community
  • Backed by Meta
Limitations
  • Requires build tooling
  • Rapid ecosystem churn
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