Industry Use- Cases of JavaScript

Gaurav Tank
4 min readJun 25, 2021

Javascript is one of the most used languages in the market these days. The below graph shows a graphical representation of a company for all languages. JavaScript stands second in the lineup. It is mainly used in building websites and web applications. The other application of JavaScript is listed below.

Top 10 Uses of JavaScript

1. Web Development

JavaScript is a client scripting language that is used for creating web pages. It is a standalone language developed in Netscape. It is used when a webpage is to be made dynamic and add special effects on pages like rollover, roll out and many types of graphics. It is mostly used by all websites for validation. In addition to validations, it supports external applications like PDF documents, running widgets, supporting flash applications, etc. It can also load content into a document whenever the user requires it without even reloading the entire page.

2. Web Applications

With technology browsers and personal computers have improved to the extent that a language was required to create robust web applications. When a user explores a map in Google Maps then the user just needs to click and drag the mouse. All detailed view is visible by just a click. This is possible due to JavaScript. It interacts with the browser without sending messages to and fro to the servers. JavaScript uses Application Programming Interfaces(APIs) that provide extra powers to the code.

3. Presentations

JavaScript also provides the facility of creating presentations as a website. JavaScript provides RevealJS and BespokeJS libraries to build a web-based slide deck. Reveal.js creates some of the most beautiful and interactive decks using HTML. A user can easily insert nested slides. Even if the user is not aware of the programming language then they can easily build a site with so much help online. These presentations are touch-optimized and work great with mobile devices, phones, and tablets. With all this JavaScript also provides different transition styles, themes, and slide backgrounds. It supports all CSS color formats. JavaScript also provides Bespoke.js plugin with a wide variety of features. These include responsive scaling, animated bullet lists, and syntax highlighting for code examples. It provides themes that are polished and not too flashy. The quickest way to start Bespoke.js is using a generator. It allows the user to set titles to your presentation and go through a set of questions to get the plugins required.

4. Server Applications

Node JS is built on Chrome’s Javascript runtime for building fast and scalable network applications. It uses event-driven, lightweight, and efficient applications which are to be distributed over the systems with the help of a server. Javascript is used to handle HTTP requests and generate content. When a user is writing thick applications in JavaScript on the client then a user may even write the logic in JavaScript on the server so that cognitive leaps can be done from one language to the other.

5. Web Servers

Using Node JS a web server can be created. The advantages of Node JS are that it is event-driven and would not wait for the response of the previous call. It moves to the next call and takes advantage of events to get notifications when a response is received for a previous call. The servers built on Node JS are very fast and do not use buffering and transfer chunks of data. In addition to this, it is single-threaded with event looping which is used in a non-blocking way. The HTTP module can help in creating a server by using the createServer() method. This method is executed whenever someone tries to access port 8080. In response to this, the HTTP server should display HTML and should be included in the HTTP header. It can be installed easily by typing ‘npm install -g HTTP-server’ and it can be started by typing the HTTP-server command.

Company Use-Cases


Medium is an online platform for publishing articles with a large diversity of content. Medium developers build their app servers with Node.js accompanied by the webserver NGINX. The Medium team enjoys the privilege of being able to share code between the server-side and client-side. They’ve also sped up deployment times by a whopping 15 minutes.


Mozilla Firefox is a popular web browser. Many of its web apps use Node.js because of its memory capacity and for the ease of use involved in being able to keep everything in a single JavaScript repository.


Businesses use GoDaddy to host websites and register domain names on the Internet. Their back-end infrastructure is dependent on Node.js. Senior Software Developer Stephen Commisso maintains this is because of its ability to make quality apps and release new features quickly. In addition, Node.js is practical for testing, NPM resources, and REST. Representational State Transfer (REST) defines standards between computer systems and web services, a powerful feature for GoDaddy developers.