How to Install Express in a Node Project?

ExpressJS is a popular, lightweight web framework for NodeJS that simplifies the process of building web applications and APIs. It provides a robust set of features for creating server-side applications, including routing, middleware support, and easy integration with databases and other services.

Before adding Express to your project, ensure that NodeJS is installed on your system. For detailed installation instructions, you can refer to this guide: --> Here

Steps to Install Express in a Node Project

Step 1: Navigate to Your Project Directory

Open your terminal or command prompt and move to your project's root directory

cd path-to-your-porject

Step 2: Initialize the NodeJS Project

Set up your project by creating a package.json file

npm init -y

This command initializes the project with default settings, creating a package.json file that manages your project's dependencies and metadata.

Step 3: Install ExpressJS

Add ExpressJS to your project

npm install express

This installs the ExpressJS framework and adds it to the dependencies section of your package.json.

Step 4: Create a Basic Express Server

In your project directory, create a file named app.js and add the following code

const express = require('express');
const app = express();
const PORT = 3000;

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

app.listen(PORT, () => {
    console.log(`Server is listening at http://localhost:${PORT}`);
});

Step 5: Start the Server

Run your server with the following command

node server.js

Terminal Output

Web Browser Output

When you navigate to http://localhost:3000 in your web browser, you should see: