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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.

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Dec 23 '25

What Are Props in React? A Beginner-Friendly Guide

#webdev #react #beginners #javascript

3 min read

Cover image for Passing Children as Props in React (Beginner Friendly Guide)

Dec 27 '25

Passing Children as Props in React (Beginner Friendly Guide)

#beginners #react #javascript #tutorial

3 min read

Jan 27

Screenshot Automation in Docusaurus: Getting Started

#react #documentation #docusaurus #javascript

1 min read

ICraftCode

Jan 27

Thinking Declaratively: Why Your React Components Should Be "Mirrors"

#react #declarative #reactjsdevelopment

3 min read

Cover image for New Free React Challenge: Countdown ⏱️

Duffman

Dec 22 '25

New Free React Challenge: Countdown ⏱️

#react #javascript #frontend #frontendchallenge

1 min read

Cover image for Sketch‑Programming (LLM Transpiler) — what is it?

Dmitry Olkhovoi

Dec 26 '25

Sketch‑Programming (LLM Transpiler) — what is it?

#ai #javascript #llm #react

4 min read

Cover image for ReactJS Hook Pattern ~Custom Hook Composition~

Ogasawara Kakeru

Jan 27

ReactJS Hook Pattern ~Custom Hook Composition~

#programming #javascript #react #learning

1 min read

Jan 25

Part 2 - The Fiber Revolution (React 16)

#architecture #javascript #performance #react

5 min read

Dec 23 '25

De la théorie à la pratique : Comment j'ai construit mon portfolio full-stack en React

#showdev #serverless #javascript #react

1 min read

Cover image for Day 5 - Building a Production-Ready Portfolio: Phase 3 - Freezing the Product Surface

Jan 27

Day 5 - Building a Production-Ready Portfolio: Phase 3 - Freezing the Product Surface

#webdev #python #react #programming

8 min read

Dec 22 '25

Conditional Rendering in React: A Practical Guide for Beginners

#react #webdev #beginners #programming

4 min read

Cover image for Fix 'Objects are not valid as a React child' Error (2026)

Jan 27

Fix 'Objects are not valid as a React child' Error (2026)

#react #reactnative #webdev #programming

5 min read

Cover image for Why static diagrams fail: simulating an e-commerce checkout flow in Robust Design

Joshua

Dec 23 '25

Why static diagrams fail: simulating an e-commerce checkout flow in Robust Design

#systemdesign #react #webdev #programming

2 min read

Cover image for Master React Testing Step-by-Step: Jest, Vitest & React Testing Library

Jan 26

Master React Testing Step-by-Step: Jest, Vitest & React Testing Library

#react #javascript #nextjs

10 min read

Cover image for React.js vs Next.js: What to Choose, When, and Why?

Jan 26

React.js vs Next.js: What to Choose, When, and Why?

#webdev #react #learning #nextjs

3 min read

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