LearnNode.js

Learn Node.js

Node.js runs JavaScript on the server, so the language you already use in the browser can answer requests, talk to a database and send email. This path builds one Express app piece by piece: how a request finds the right code, what runs in between, and how to keep the code organised as it grows.

Written so far#

Read these in order. Each one builds on the app from the one before.

Express router, with examples Middleware, with examples Controllers, with examples Sending email from Node.js

Where the backend topics live#

Some backend topics are taught better on their own paths, with diagrams and numbers, than as a Node.js page. Start here for those.

Databases: SQL, Redis, MongoDB, DynamoDB Caching patterns Scaling from one server Message queues

Being written#

The rest of the path is planned, and each chapter is listed in the sidebar with a "Coming soon" mark until it is ready: fundamentals, async programming, REST APIs, error handling, validation, authentication and authorization, testing, WebSockets and deployment.