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Node.js Fundamentals · Building an API · Lesson 7 of 13

Creating an HTTP Server

Concept

Creating an HTTP Server

Node's built-in http module can create a basic web server that listens for and responds to requests.

By the end of this lesson
  • Explain the core idea behind Creating an HTTP Server.
  • Predict output before running a change.
  • Test one realistic and one unusual input.
  • Use the result to make the next decision.
How to study this page
  1. 1. Read one concept.
  2. 2. Change the example.
  3. 3. Run, compare, and explain.
  4. 4. Complete the challenge below.
ExampleRunnable
const http = require("http");
const server = http.createServer((req, res) => {
  res.end("Hello from Node!");
});
server.listen(3000);
Try it Yourself »
Self-check before continuing

Without looking at the example, describe what changes when you modify one input in Creating an HTTP Server. Then reopen the editor and prove your explanation with a small test.

You are ready to continue when you can predict, test, and explain the result.

Your turn

Explain what server.listen(3000) does.

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Console

Output will appear here...