freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

Algorithms and data structures implemented in JavaScript with explanations and links to further readings

A book series on JavaScript

JavaScript Style Guide

Curated coding interview preparation materials for busy software engineers

Coding articles to level up your development skills

Papers from the computer science community to read and discuss.

The Node.js best practices list (July 2026)

A collection of (mostly) technical things every software developer should know about

The perfect Front-End Checklist for modern websites and meticulous developers

33 JavaScript concepts every developer should know.

A list of helpful front-end related questions you can use to interview potential candidates, test yourself or completely ignore.

Collection of TypeScript type challenges with online judge

API Documentation Browser

A simple, scalable, and powerful architecture for building production ready React applications.

An interactive git visualization and tutorial. Aspiring students of git can use this app to educate and challenge themselves towards mastery of git!

Modern JavaScript Tutorial

CSS is powerful, you can do a lot of things without JS.

Jargon from the functional programming world in simple terms!

Cheatsheets for web development - devhints.io

A Concise Guide to Effective Development in TypeScript

Connect, collaborate, and grow with a community of TypeScript developers. Elevate your skills through interactive coding challenges, discussions, and knowledge sharing

Learn RegEx step by step, from zero to advanced.

A book that teaches JavaScript