Node.js Q & A


How do you create a server in Node.js?

Creating a server in Node.js is a fundamental task that involves using the built-in http or https modules to create an HTTP or HTTPS server respectively. Here’s a basic example of how to create a simple HTTP server in Node.js:

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// Import the http module
const http = require('http');

// Define the hostname and port number
const hostname = '';
const port = 3000;

// Create an HTTP server
const server = http.createServer((req, res) => {
 // Set the HTTP status code and content type
 res.statusCode = 200;
 res.setHeader('Content-Type', 'text/plain');

 // Send a response to the client
 res.end('Hello, World!\n');

// Start the server and listen on the specified port
server.listen(port, hostname, () => {
 console.log(`Server running at http://${hostname}:${port}/`);

In this example, we import the http module, define the hostname and port number, create an HTTP server using the createServer() method, and specify a callback function to handle incoming HTTP requests. Inside the callback function, we set the HTTP status code, content type, and send a response to the client using the res.end() method.


To run this server, save the code in a file (e.g., server.js) and execute it using Node.js:

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node server.js

This will start the server, and you can access it by navigating to in your web browser. You should see the message “Hello, World!” displayed in the browser, indicating that the server is running successfully.


Creating an HTTPS server follows a similar process but requires additional steps such as generating SSL certificates and configuring the server to use HTTPS encryption. However, the basic principles of creating and running a server remain the same.


Creating a server in Node.js is simple yet powerful, allowing developers to build scalable and high-performance web applications and APIs.

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Experienced Principal Engineer and Fullstack Developer with a strong focus on Node.js. Over 5 years of Node.js development experience.