Express Server

Step 1: You can install the express package using npm. Run the following command:

npm install express

This command will download and install the express package and its dependencies into your project directory.

Step 2: Create an Express Application

Now that you have express installed, you can create an Express application by writing JavaScript code. Here's a simple example to get you started:

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

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

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

In this example:

• We import the express package and create an Express application using const app = express();.

• We define a route using app.get('/', ...), which responds with "Hello, Express!" when you access the root URL.

• We start the server by calling app.listen(port, ...), where port is the port on which your server will listen for incoming requests.

Step 4: Run Your Express Application

To run your Express application, execute the following command in your project directory:

node your-app.js

Replace your-app.js with the name of the file where you've written the Express application code.

Your Express server will start, and you can access it by opening a web browser and navigating to http://localhost:3000. You should see the "Hello, Express!" message.

With these steps, you've successfully installed the express package and created a simple Express application. You can now build web and mobile applications using the Express framework.