expressjsHow do I build an Express.js application?

An Express.js application can be built by following the steps below:

1. Install the Express.js framework:

npm install express

2. Create an application object:

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

3. Set up routes:

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

4. Set up a server:

const port = 3000;

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

5. Output:

Server running on port 3000

6. Test the application: Open a web browser and navigate to http://localhost:3000.

7. Helpful links

   • Express.js Getting Started Guide
   • Express.js Routing Guide

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