Complete Reference with Copy-Paste Examples
Part of The Direct Path to Linux Ubuntu
— free for all students and developers.
JavaScript runs in every web browser on earth AND on the server with Node.js — the only language truly everywhere.
Arrow functions, destructuring, async/await, optional chaining — modern JavaScript is elegant and powerful.
npm has 2 million+ packages. Express, React, Next.js, NestJS — JavaScript powers the modern web stack.
One language for frontend, backend, mobile (React Native), and desktop (Electron) — JavaScript does it all.
Run a JavaScript program:
node script.js # run Node.js script node --watch script.js # auto-restart on change npm init -y # create package.json npm install express # install a package npm run start # run start script npx create-react-app myapp # scaffold React app node -e 'console.log(42)' # one-liner execution node --inspect script.js # debug with Chrome DevTools
