Welcome to Node JS and Express JS Setup Tutorial

Node.js and Express.js are essential tools for modern web development. In this tutorial, we will walk you through the installation and setup process for these powerful technologies.

What is Node JS and Express JS?

Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine. It allows you to build scalable, high-performance web applications using JavaScript on the server side. Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.

Setting up Node.js

To get started with Node.js, you need to download and install it from the official website. Once installed, you can verify the installation by running the following command in your terminal:

node --version

Setting up Express.js

To install Express.js, you need to initialize a new Node.js project using npm, the Node.js package manager. Run the following command in your terminal to create a new package.json file:

npm init -y

Next, install Express.js by running the following command:

npm install express

Building a Simple Node.js and Express.js Application

Now that you have Node.js and Express.js set up, you can start building your first web application. Here’s a simple example of a “Hello World” application using Express.js:

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

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

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

Conclusion

Congratulations! You have successfully set up Node.js and Express.js and built your first web application. Now that you have a solid foundation, you can explore more advanced features and build powerful web applications with these technologies.

About the Expert

This tutorial was created by Rohila, an experienced web developer and educator. Rohila has a passion for sharing knowledge and helping beginners learn the fundamentals of web development.