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React

Official tag for Facebook's React JavaScript library for building user interfaces

about #react

React is a declarative, component-based library, you can learn once, and write anywhere

Editor Guide

Check out this Editor Guide
or this post to learn how to add code syntax highlights, embed CodeSandbox/Codepen, etc

Official Documentations & Source

Improving Your Chances for a Reply

by putting a minimal example to either JSFiddle, Code Sandbox, or StackBlitz. Describe what you want it to do, and things you've tried. Don't just post big blocks of code!

Where else to ask questions

StackOverflow tagged with [reactjs] Beginner's Thread / Easy Questions (Jan 2020) on r/reactjs subreddit.

Note: a new "Beginner's Thread" created as sticky post on the first day of each month

Learn in Public

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Cover image for JavaScript Closures Finally Clicked!

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Cover image for AI Keeps Reinventing Your Components. Here's How to Stop It.

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Cover image for Fix React Chunk Load Errors Fast (2025 Guide)

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Cover image for Introduction of JavaScript

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Cover image for What’s New in React 19.2 – Activity API, useEffectEvent, cacheSignal & More

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Cover image for Why I Chose Vue Over React in 2025 (Or: How I Survived 15+ Years of Frontend Without Losing My Mind)

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Cover image for Boost Your React Grid with Middleware: Secure Headers, Role-Based Filters, and More

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