Question 1

What is Express JS?

Accepted Answer

Express JS is an open-source back-end web application Node JS framework. Developers use it to produce server-side applications. This software is a Node JS build. This famous architecture offers numerous HTTP utility methods to create APIs and apps quickly. This framework holds the title of being the standard server framework for Node JS.

Question 2

What are the core features of the Express framework?

Accepted Answer

The core features of the Express framework are routing, middleware support, template engine support, and database integration. In addition, the Express framework offers req (request) and res (response) objects allowing requesting data access and sending a response. Security measures, file uploads and downloads, session and cookie support, and error-handling features are also available.

Question 3

How do I install Express?

Accepted Answer

To install Express, one needs first to install Node.js on their system. Then they can use the npm (Node Package Manager) command npm install Express to install Express. For this purpose, one needs to open their terminal window and run the $ npm install express command. This step installs the Express framework into the project directory. Finally, use the command $ npm install -g express to install globally.

Question 4

How do I create a primary Express server?

Accepted Answer

To create a primary Express server, one has to import the Express module. To install the Express module for Node.js:
1.	Use the command npm to install Express.
2.	Create a new JavaScript file using const express = require('express').
3.	Create an Express application instance using const app = express().
4.	Mention the port that the server listens.
The next step is to set up routes and start the server.

Question 5

How do I handle form data in Express?

Accepted Answer

To handle form data in Express, use the body-parser middleware. To do that, install the body-parser module using npm with the command npm install body-parser --save. Now import it into the Express application. After that, use the app.use() method to include the body-parser middleware in the application. Finally, one can access the form data in their route handlers using the req.body object.

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