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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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Mahmood Hassan Rameem

Sep 17 '25

React Form with "useActionState" Hook

#react #reactjsdevelopment #frontend #programming

2 min read

Mahmood Hassan Rameem

Sep 17 '25

React Form Action

#react #webdev #programming #frontend

3 min read

Kazutora Hattori

Sep 17 '25

A Summary of User Interactions in React Testing Library (fireEvent / userEvent)

#react #programming

1 min read

jackma

Oct 9 '25

React Context: Performance Challenges and Optimizations

#webdev #programming #react #tutorial

10 min read

Sep 17 '25

Full-Stack Authentication Demystified — A Step-by-Step Guide with React, Node.js, and Supabase

#react #node #authentication #webdev

7 min read

Evgenii Grebennikov

Sep 17 '25

Writing a high-performance viewport for a messenger

#angular #react #messanger #virtual

7 min read

Mohsen Fallahnejad

Sep 17 '25

Frontend Design Patterns — A Practical Guide

#frontend #architecture #react #designpatterns

3 min read

Roman

Sep 17 '25

Things to Remember When You Test Your React App

#webdev #jest #react #testing

5 min read

Sep 21 '25

A Practical React Project Structure

#react #productivity #frontend #webdev

3 min read

Oct 19 '25

Introducing Varwolf 🐺 - Dynamic CSS Variables for React

#react #css #typescript #javascript

3 min read

Arka Chakraborty

Sep 16 '25

Void vs Undefined in TypeScript: Runtime vs Compile-Time Explained

#react #webdev #javascript #typescript

2 min read

Álvaro Aparicio

Sep 16 '25

Monthly Expense Calculator — Looking for Feedback!

#webdev #programming #react #javascript

1 min read

Arka Chakraborty

Sep 16 '25

What’s the Return Type of a Function That Returns Nothing in TypeScript?

#react #webdev #javascript #typescript

2 min read

Arka Chakraborty

Sep 16 '25

Real life examples of async function signatures in React + Typescript

#react #webdev #javascript #typescript

1 min read

Kazutora Hattori

Sep 16 '25

A Summary of Element Search Methods in React Testing Library (getByText / getByRole / getByLabelText)

#react #testing

1 min read

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