Best Online Tutorials

SQL Tutorial

Free SQL Tutorial

SQL Interview Questions

SQL Practice Questions

SQL Tips & Tricks

SQL Errors

SQL Books

Angular Tutorial

Free Angular Tutorial

Angular Interview Questions

Angular Practice Questions

Angular Tips & Tricks

Angular Errors

Angular Books

Node.js Tutorial

Free Node.js Tutorial

Node.js Interview Questions

Node.js Practice Questions

Node.js Tips & Tricks

Node.js Errors

Node.js Books

React.js Tutorial

Free React.js Tutorial

React.js Interview Questions

React.js Practice Questions

React.js Tips & Tricks

React.js Errors

React.js Books

SSIS Tutorial

Free SSIS Tutorial

SSIS Interview Questions

SSIS Practice Questions

SSIS Tips & Tricks

SSIS Errors

SSIS Books

SEO Tutorial

Free SEO Tutorial

SEO Interview Questions

SEO Practice Questions

SEO Tips & Tricks

SEO Errors

SEO Books

Javascript Tutorial

Free Javascript Tutorial

Javascript Interview Questions

Javascript Practice Questions

Javascript Tips & Tricks

Javascript Errors

Javascript Books

MongoDB Tutorial

Free MongoDB Tutorial

MongoDB Interview Questions

MongoDB Practice Questions

MongoDB Tips & Tricks

MongoDB Errors

MongoDB Books

Next.js Tutorial

Free Next.js Tutorial

Next.js Interview Questions

Next.js Practice Questions

Next.js Tips & Tricks

Next.js Errors

Next.js Books

Node.js - Web Modules

Prashant Surya | Nov 19, 2019 | Views: 8

Description:

What is Web Module in Node.js?

Web module in Nodejs is responsible to handle the HTTP web requests, by using web server and web reources.

web server:

Webserver handle the HTTP requests process them with specific tasks like (interaction with databases, filesystems..) and sends the response as a web resources or result data.

Web resources:

These are the asstes or files like documents , images, style sheets, and scripts which a web server return in form of response from their end.

Web Module application architecture:

Applications are built in 4 layers:

Client -

It sends requests to the web server and gets the response

Web Server -

It receives requests and then interact with Business layer to get response

Business Layer -

It receives requests from server and then interact with data layer to get response

Data Layer -

It receives requests from Business Layer and then run query to get the response form the data storages and response back to business layer.

Now lets have a look step by step, how to create a web server in Node.js

Step 1:

Create a js file named server.js in root:

var http = require('http');
var url = require('url');
var fs = require('fs');
http.createServer(function (req, res) {
    var q = url.parse(req.url, true);
    var filename = "index.html" + q.pathname;
    fs.readFile(filename, function (err, data) {
        if (err) {
            res.writeHead(404, { 'Content-Type': 'text/html' });
            return res.end("404 Not Found");
        }
        res.writeHead(200, { 'Content-Type': 'text/html' });
        res.write(data);
        return res.end();
    });
}).listen(8000);
console.log('server running at localhost:8000');

Step 2:

Create an HTML file named index.html in the same directory where you have created the server.js and add the below code.

<!DOCTYPE html>
<html>
<body>
    <h1>Welcome to DritalConnect!</h1>
</body>
</html>

Step 3:

Open the Node.js command prompt and run the following commands:

node server.js

Step 4:

Verify Output:

Open the browser and type the URL

http://localhost:8000/index.html

Check your output in browser - Welcome to DritalConnect!

Comments:

Content Contributor★★★★★

Prashant Surya

Software developer at Uniserve Data Technologies Pvt. Ltd. | Noida, Uttar Pradesh, India

I am a software developer, freelancer and trainer working on technologies likes. MEAN stack, MERN Stack, ASP.NET full stack, WebRTC, socket.io ,PWA, SQL, JavaScript, jQuery, HTML, CSS, SEO, responsive UI/UX designing... having 7 years of experience in development in multiple domains like, eCommerce, RTA, capital markets, education, real estate...