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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

Don't afraid to post an article or being wrong.
Learn in public.

👋 Sign in for the ability to sort posts by relevant, latest, or top.

JavaScript Room

Nov 8 '25

Building Reddit Game with Devvit and TypeScript (starter included)

#typescript #javascript #webdev #react

2 min read

Emeruche Ikenna

Oct 7 '25

How to Get Started with React JS in 2025

#javascript #tutorial #beginners #react

4 min read

Saleh Ahmed Mahin

Oct 6 '25

The Redux Mystery: Why Does It Feel So Hard?

#webdev #react #redux #reduxtoolkit

7 min read

Learcise

Oct 7 '25

🧩 A Complete Guide to React Testing: From Unit Tests to E2E, Snapshots, and Test Doubles

#webdev #programming #react #jest

5 min read

Kazutora Hattori

Oct 7 '25

A story about getting stuck with Firebase Hosting cache issues

#firebase #react #webdev #programming

1 min read

LAKSHMI G

Oct 7 '25

React Question & Answer

#beginners #javascript #react

4 min read

Dharmesh

Oct 7 '25

# Managing CRUD Operations in React using Context API & TypeScript

#react #tutorial #typescript

2 min read

Kevin Julián Martínez Escobar

Nov 9 '25

TWD getting started

#react #tutorial #testing #twd

3 min read

Kevin Julián Martínez Escobar

Nov 10 '25

Testing While Developing (Part 3): Mocking API Requests

#react #tutorial #testing #twd

7 min read

Kevin Julián Martínez Escobar

Nov 9 '25

Testing While Developing (Part 1) – Installation and First Test

#react #tutorial #testing #twd

3 min read

Kevin Julián Martínez Escobar

Nov 10 '25

Testing While Developing (Part 4): Running Tests in CI

#react #tutorial #testing #twd

3 min read

Kevin Julián Martínez Escobar

Nov 10 '25

Testing While Developing (Part 5): Collecting Coverage

#react #tutorial #testing #twd

4 min read

Taron Vardanyan

Nov 10 '25

React 19.2: Deep Dive into Activity and useEffectEvent

#react #javascript #frontend #hooks

2 min read

Jeet Singh

Oct 19 '25

This was a feature not a bug🐞

#tooling #learning #javascript #react

2 min read

Jayce Li

Nov 10 '25

Building DayFlow: A Modern React Calendar Library with Temporal API and Advanced Drag-and-Drop

#showdev #react #ui #javascript

6 min read

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