Creating a Simple Express.js Application: A Beginner's Tutorial

Creating a Simple Express.js Application: A Beginner's Tutorial


Express.js is a fast, unopinionated, and minimalist web framework for Node.js. It is used to build web applications and APIs. In this tutorial, we will create a simple Express.js application.


  • Node.js installed on your machine
  • Basic understanding of JavaScript
  • An IDE or a code editor like VS Code

Step 1: Setting Up the Project

First, we need to set up a new Node.js project. Open your terminal or command prompt, navigate to the directory where you want to create your project, and type the following:

  1. mkdir my-express-app
  2. cd my-express-app
  3. npm init -y

Step 2: Installing Express.js

After initializing our project, we need to install Express.js. We can do this by typing the following command:

  1. npm install express

Step 3: Creating Our First Route

Create a new file in your project directory named «app.js», and open it in your code editor. Type in the following code:

  1. const express = require('express');
  2. const app = express();
  3. app.get('/', (req, res) => {
  4. res.send('Hello, Express.js!');
  5. });
  6. app.listen(3000, () => {
  7. console.log('Server listening on port 3000');
  8. });

Step 4: Running the Application

Now that we have our simple Express.js application ready, let's run it. Type the following command in your terminal:

  1. node app.js


There you have it! You have successfully created your first simple Express.js application. This is just the beginning; Express.js has a lot more features and capabilities to explore. Happy coding!

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