JavaScript : Industry Use Case

Javascript industry use cases

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This is an new article which is based on a Javascript use case. So let’s start with our article..

JavaScript is a dynamic programming language that’s used for web development, in web applications, for game development, and lots more. It allows you to implement dynamic features on web pages that cannot be done with only HTML and CSS.

Java Script :

JavaScript is a loosely-typed client-side scripting language that executes in the user’s browser. JavaScript interacts with HTML elements (DOM elements) in order to make an interactive web user interface.

JavaScript is a high-level ,interpreted, object-oriented Programming language. It is one of core of the web technologies along HTML and CSS.

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

Common examples of JavaScript that you might use every day include the search box on Amazon, a news recap video embedded on The New York Times, or refreshing your Twitter feed.

Why should we use JavaScript ?

Although we have many client languages for the browser for HTML manipulation like VBScript and coffee script, why we mainly use JavaScript? Why it’s a born winner? Why not replace JAVASCRIPT with other scripting languages? The reasons are

  • It is what every other browser supports.
  • Most of the client languages they built use JavaScript as an intermediate.
  • It is easy to learn compared to other scripting languages.

You can take out the JavaScript, but it involves a lot of cost and damage to the internet. The only reason we are not letting it rest in peace.

HTML defines the structure of your web document and the content therein. CSS declares various styles for the contents provided on the web document.

HTML and CSS are often called markup languages rather than programming languages, because they, at their core, provide markups for documents with very little dynamism.

JavaScript, on the other hand, is a dynamic programming language that supports Math calculations, allows you to dynamically add HTML contents to the DOM, creates dynamic style declarations, fetches contents from another website, and lots more.


  • Angular — Perhaps the most important JS development framework. Provides a Model-View-Controller architecture, and a fairly opinionated approach to rapid development. Developed by Google.
  • Backbone — The main competitor to Backbone. The biggest difference is that Backbone is much less opinionated. Additionally, Backbone was originally abstracted from a Ruby on Rails application, so there are some conveniences in using the two frameworks together.
  • — A real-time application library that includes a client-side library and a server-side node.js component.
  • Ember
  • React

Advantages of JavaScript

The merits of using JavaScript are −

  • Less server interaction − You can validate user input before sending the page off to the server. This saves server traffic, which means less load on your server.
  • Immediate feedback to the visitors − They don’t have to wait for a page reload to see if they have forgotten to enter something.
  • Increased interactivity − You can create interfaces that react when the user hovers over them with a mouse or activates them via the keyboard.
  • Richer interfaces − You can use JavaScript to include such items as drag-and-drop components and sliders to give a Rich Interface to your site visitors.
  • Websites — Obvious, this is why we invented this language. In websites, it is used to add interactivity to HTML elements.
  • Server Applications — Node.js changed the way we use JavaScript. Now this language is used in building server. Node.js capability to build scalable web apps.
  • Mobile Apps — React Native is used to creating mobile apps with JavaScript.
  • Smartwatch apps — React Native is used to creating mobile apps with JavaScript.
  • Robots and IoT– Yes, you’ve read that right. With a minimal OS, NodeJS can be installed and this means you can use JavaScript environment to code Robots.
  • Johnny-Five — For robotics and IoT Platform
  • Cylon JS — Robotics kit
  • Games — You can use any language to code a game. But with HTML5 canvas and JavaScript as browser-based games will be super cool.
  • Machine learning — With AI being state of the art on current technologies, how can JavaScript stay out of the ring?

# TensorFlow is now available on JavaScript

# Brain JS for building Neural Nets

# Compromise for natural language processing

Core Features of JavaScript :

  • JavaScript is a object-based scripting language.
  • Giving the user more control over the browser.
  • It Handling dates and time.
  • It Detecting the user’s browser and OS,
  • It is light weighted.
  • JavaScript is a scripting language and it is not java.
  • JavaScript is interpreter based scripting language.
  • JavaScript is case sensitive.
  • JavaScript is object based language as it provides predefined objects.
  • Every statement in JavaScript must be terminated with semicolon (;).
  • Most of the JavaScript control statements syntax is same as syntax of control statements in C language.
  • An important part of JavaScript is the ability to create new functions within scripts. Declare a function in JavaScript using function keyword.

Industry Use Cases :


Netflix is the world’s supplier of flowing broadcast and television. Netflix is the world’s top supplier of flowing broadcast and television. The company decided to embrace fast and easy Node.JS.

Earlier, Netflix was using Java on the back end and JavaScript on the front end, which required the developers to be proficient with languages.

As a result, they had to do double work for error handling, activity tracking, and debugging.

Netflix is now among companies using Node.JS due to the following reasons:

  • A common language both for the server-side and browser side.
  • High performance — now the page loads within seconds.
  • A great number of modules and their open source nature.
  • An easy way of writing, debugging, and engineering the API.

UI work is demanding at Netflix. The company’s services stream out to a wide number of devices, from the Web to mobile applications to dedicated consoles. With Node, they can do all their work in JavaScript. The UI team manages the Node platform for the video service.

LinkedIn :

LinkedIn is the world’s largest professional network on the internet. You can use LinkedIn to find the right job or internship, connect and strengthen professional relationships, and learn the skills you need to succeed in your career. You can access LinkedIn from a desktop, LinkedIn mobile app, mobile web experience, or the LinkedIn Lite Android mobile app.

LinkedIn relies on NodeJS for its mobile site. A few years back, LinkedIn used Rails for its mobile site. As with other other large Rails applications, it was slow, monolithic, and it scaled poorly.

LinkedIn switched over to NodeJS to solve its scaling problems. Node’s asynchronous capabilities allowed the LinkedIn mobile site to perform more quickly than before while using fewer resources. Node also made data sharing and building APIs easier for the LinkedIn developers.

MicroSoft :

First off, Microsoft needs to work closely with JavaScript to built its Edge web browser. All browsers need to process and execute JavaScript efficiently, so Microsoft has developed and maintains its own JavaScript engine for Edge. Actually, there has been talk of them creating an alternate version of NodeJS with the Edge engine.

Recently, Microsoft has really embraced NodeJS. They thoroughly support Node on the Azure cloud platform. Its one of Azure’s major features, and they’ve integrated Visual Studio support for Node.

Microsoft has also developed a version of Node for Internet Of Things(IoT) applications. NodeJS is great of IoT because it’s light weight and efficient.


As you’re probably aware, NASA (National Aeronautics and Space Administration ) is a United States government-sponsored department responsible for the research and exploration of space-related matters.

Microservices is a feature of Node.js where developers approach application development by presenting the software as a collection of small services rather than as an autonomous unit. Using this feature NASA was able to move its enterprise to the cloud.

Google :

How doesn’t Google use JavaScript? Seriously, it’s everywhere. Google’s search results that spring up as your typing get there with JavaScript. The Gmail web client is powered by JavaScript. Google Docs? Yeah, that’s JavaScript too.

Google develops and usually open sources it’s own JavaScript tools. The most obvious example is AngularJS. Angular is used most prominently in Google’s DoubleClick advertising platform, but it’s also one of the most popular front end frameworks available. It’s even part of the MEAN stack.

Google’s more intensive services, like Google Docs, use Closure Tools. This set of tools compiles JavaScript into a lower-level faster form more suited for rich and highly responsive web applications.

There’s another big point to touch on. Google developed Chrome. Chrome, being a web browser, needed a JavaScript engine, so Google also made V8. V8 not only powers Chrome, it’s at the heart of NodeJS. So, without Google, there would be no Node.

Medium :

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.

eBay :

eBay’s story is a lot like Netflix’s. For a long time, just about everything in eBay’s tech stack was based on Java. A few years ago, eBay encountered a problem that Java wasn’t the right solution for. They decided to give NodeJS a shot instead.

Node worked so well that eBay not only kept using it for that particular service, they began migrating their entire user facing stack to NodeJS. Now, just about everything that you interact with on eBay is powered by Node. Sure, beneath Node, Java is still dealing with their databases, but eBay still places a lot of trust in NodeJS.

GoDaddy :

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.

FaceBook :

You’re probably aware that Facebook uses JavaScript. It’s kind of hard to miss. What’s probably not as obvious is exactly how much JavaScript goes into making Facebook and how much Facebook is involved in JavaScript development.

Try disabling JavaScript in your web browser and going to Facebook. The website will actually stop you from logging in because it won’t work without JavaScript.

You may have noticed the way that Facebook loads. Each piece of the page is separate. Facebook has invented its own way of breaking down and delivering sections of JavaScript separately. In an odd way, each section of your Facebook page is a collection of independent JavaScript applications.

It doesn’t stop there. Facebook created React one of the most popular front end frameworks. Facebook uses React on as well as Instagram and WhatsApp.

Trello :

Trello is a collaborative online tool that businesses use to organize projects and ideas using virtual boards.

The typical Trello dashboard can tell its user what is being worked on, who’s working on it, and what step the project is on in the development process.

The server-side of Trello uses Node.js. It is important for Trello and its users to have immediate updates and Node.js has the capacity to hold many open connections at once.

The Trello team also appreciates the many libraries of Node.js and its functionality for single-page apps.

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