Node.js Setup with Express.js

Node.js is a popular runtime environment for executing JavaScript code server-side. Express.js is a web application framework for Node.js that makes it easy to build web applications and APIs. In this article, we will cover the steps to set up Node.js with Express.js.

Step 1: Install Node.js

To get started, you’ll need to install Node.js. You can download the installer from the Node.js website and follow the installation instructions to set it up on your machine.

Step 2: Create a New Project

Once Node.js is installed, you can create a new folder for your project. Open a terminal and navigate to the directory where you want to create your project. Then, run the following command to initialize a new Node.js project:

    
      npm init -y
    
  

Step 3: Install Express.js

With the project initialized, you can now install Express.js. Run the following command in your terminal to add Express.js as a dependency to your project:

    
      npm install express
    
  

Step 4: Create an Express.js App

Now that Express.js is installed, you can create a new file for your Express.js app. In your project folder, create a file called app.js and add the following code to create a basic Express.js app:

    
      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');
      });
    
  

Step 5: Run Your Express.js App

Finally, you can run your Express.js app by executing the following command in your terminal:

    
      node app.js
    
  

Once the server is running, you can open a web browser and navigate to http://localhost:3000 to see your Express.js app in action.

That’s it! You’ve now successfully set up Node.js with Express.js. Happy coding!