How To Install And Use Express JS For Beginners

If you’re new to web development and looking to build web applications using Node.js, Express.js is a great framework to get started with. In this article, we’ll walk you through the process of installing and using Express.js for beginners.

Installing Express.js

To install Express.js, you’ll first need to have Node.js installed on your computer. You can download and install Node.js from the official website (https://nodejs.org/). Once you have Node.js installed, you can use npm (Node Package Manager) to install Express.js. Open your terminal or command prompt and run the following command:

npm install express

This will download and install the latest version of Express.js and its dependencies into your project folder.

Using Express.js

After installing Express.js, you can create a new file for your web application and start building with Express. Here’s a simple example of a basic web server using Express.js:

        
            const express = require('express');
            const app = express();

            app.get('/', (req, res) => {
                res.send('Hello, Express!');
            });

            app.listen(3000, () => {
                console.log('Server is running on port 3000');
            });
        
    

In this example, we import the Express.js module and create a new Express application. We define a route for the root URL (‘/’) that sends a simple text response. Finally, we start the server and listen for incoming requests on port 3000.

Conclusion

Express.js is a powerful and lightweight framework for building web applications with Node.js. With its easy installation process and straightforward syntax, it’s a great choice for beginners looking to get started with web development. We hope this article has helped you understand how to install and use Express.js for your next web project.