21 Mar 2024 

// Importing required modules
const express = require('express');

// Creating an instance of Express.js
const app = express();

// Define a sample API endpoint
app.get('/api/example', (req, res) => {
    // Sample response data
    const responseData = {
        message: 'This is a sample API endpoint!',
        timestamp: new Date()
    };

    // Sending JSON response
    res.json(responseData);
});

// Define port number
const port = 3000;

// Start the server
app.listen(port, () => {
    console.log(`Server is running on http://localhost:${port}`);
});

In this example:

  1. We import the Express.js module.
  2. We create an instance of the Express application.
  3. We define an API endpoint with the GET method at the route /api/example.
  4. When a request is made to /api/example, the server responds with a JSON object containing a message and a timestamp.
  5. We specify the port number to listen on (in this case, 3000).
  6. We start the server, and it listens for incoming requests.

You can run this script using Node.js, and it will start a server listening on port 3000. When you navigate to http://localhost:3000/api/example in your browser or make a GET request to that URL using a tool like cURL or Postman, you’ll receive a JSON response with the sample message and timestamp.

Leave a Comment