React
React IntroductionReact Introduction
React is a JavaScript library for building fast user interfaces.
Read Time
5 min readDifficulty
BeginnerLast Updated
Jun 15, 2026Version
v1.0.0Introduction
React lets developers build dynamic single-page applications. Instead of building one giant HTML file, developers use React to create small, reusable chunks of code called components. Facebook created and maintains React.
Key Points
- React builds interactive user interfaces.
- It uses reusable UI components.
- It is maintained by Facebook.
- It updates the screen incredibly fast.