expressjsHow do I set up Express.js to listen for requests?

Express.js is a web application framework for Node.js. It can be used to set up a server to listen for requests. To set up Express.js to listen for requests, you need to first install the Express.js package. This can be done using the command npm install express.

Once the package is installed, you need to create an Express.js application. This can be done by creating a file and requiring the Express.js package. An example of this is shown below:

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

After the Express.js application is created, you need to set it to listen for requests on a specific port. This can be done using the app.listen method. An example of this is shown below:

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

This will set the Express.js application to listen for requests on port 3000.

Code parts

• const express = require('express'): This line requires the Express.js package.
• const app = express(): This line creates an Express.js application.
• app.listen(3000, () => { ... }): This line sets the Express.js application to listen for requests on port 3000.

Relevant Links

• Express.js
• Express.js Guide

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