Node.js

JavaScript on the server.

Run JavaScript on the backend — modules, npm, the file system, HTTP servers, Express, and REST APIs.

Start course0 of 8 lessons complete

Chapter 1

Node.js Basics

0/3

01Beginner

What is Node.js?

Discover how Node.js lets you run JavaScript outside the browser — on servers, in terminals, and everywhere in between.

02Beginner

Modules & npm

Learn how to split your Node.js code into reusable modules and pull in thousands of open-source packages with npm.

03Intermediate

The Node Runtime & Event Loop

Learn how Node.js handles thousands of simultaneous connections using a single thread and a clever non-blocking event loop.

Chapter 2

Building a Server

0/3

04Intermediate

The File System

Learn how to read and write files in Node.js using the fs module — and why doing it asynchronously keeps your server fast.

05Intermediate

Building an HTTP Server

Learn how to spin up your own web server using Node's built-in http module — no frameworks needed.

06Intermediate

Express & Routing

Learn how Express turns raw Node.js into a pleasant web server — with clean routes, URL parameters, and helpful request/response tools.

Chapter 3

APIs & Async

0/2

07Intermediate

Building a REST API

Learn the REST conventions that power the web, then build a real in-memory CRUD API with Express — resources, HTTP verbs, status codes, and JSON all included.

08Intermediate

Async in Node

Learn how Node.js handles asynchronous work — from old-school callbacks all the way to clean async/await — and how to keep your code from turning into a tangled mess.