This comprehensive React cheatsheet covers the essential patterns you need for rendering HTML, managing state, working with props, handling events, and using hooks. Keep this reference handy while building React applications to quickly look up syntax and best practices.
React is the most popular JavaScript library for building user interfaces, powering applications at Meta, Airbnb, Netflix, and thousands of other companies. This beginner's guide introduces React fundamentals — components, JSX, props, state, and hooks — with hands-on examples that build your intuition from the ground up.
Node.js and Express are the most popular tools for building fast, scalable server-side applications with JavaScript. This complete guide covers everything from understanding the Node.js event loop to building RESTful APIs with Express, connecting to databases, and deploying your application to production.