Industry use-cases of JavaScript

Priyanka Patwal
Last Updated: May 13, 2022

Introduction

JavaScript is a dynamic programming language that's used for various purposes, including web development, web apps, game creation, and more. It enables you to add dynamic features to websites that you couldn't do with just HTML and CSS.

 

For accomplishing dynamic tasks on the web, several browsers use JavaScript as a scripting language. You can witness the effects of JavaScript when you see a click-to-show dropdown menu, extra content added to a website, and dynamically changing element colors on a page, to mention a few things.

 

In this blog, we’ll discuss some of the important industry use cases of JavaScript. So, without a further ado, let’s get started!

 

JavaScript's Dynamic Capabilities

HTML defines the structure of your online document and the content within it. CSS specifies different styles for the contents of a web document. HTML and CSS are typically referred to as markup languages rather than programming languages since, at their foundation, they provide markups for static texts.

 

On the other hand, JavaScript is a dynamic programming language that allows you to perform math calculations, dynamically add HTML material to the DOM, generate dynamic style declarations, fetch content from another website, and much more.

 

Uses of JavaScript

JavaScript is one of the most widely used programming languages today. It is primarily used in the development of websites and web apps. The following is a list of JavaScript's uses:

 

 Adding interactive behaviour to web pages

 

Users can interact efficiently with web pages using JavaScript. On a web page, there are essentially zero restrictions to what we can accomplish using JavaScript. Below are a few examples:

  •  With the click of a button, show or hide more information
  •  When the mouse hovers over a button, the button changes color.
  • Sliding through a carousel of images on the webpage
  • Zoom in or zoom out on a photo on a webpage
  • Timer or count-down displaying on a webpage
  • Audio and video played on a web page

 

 Creating web and mobile apps

 

For developing and building web and mobile apps, developers can employ a variety of JavaScript frameworks. JavaScript frameworks are collections of code libraries that give developers pre-written code for standard programming features and tasks. Basically, a framework for constructing websites or online apps.

 

React, React Native, Angular, and Vue are all popular JavaScript front-end frameworks. Many businesses use Node.js, a JavaScript runtime environment based on the JavaScript V8 engine in Google Chrome. Paypal, LinkedIn, Netflix, and Uber are just a few well-known examples.

 

 Developing server applications and Building web servers 

 

Aside from websites and apps, developers may use JavaScript to create simple web servers and Node.js to develop back-end infrastructure.

 

 Game development

 

Of course, you can make browser games with JavaScript as well. These are an excellent way for new developers to put their JavaScript skills to the test. 

 

Industry using JavaScript

 

Facebook

Almost every website utilizes JavaScript. If we tried to log in to Facebook after removing JavaScript, we could not do so, demonstrating the centrality of JavaScript in Facebook. JavaScript provides the dynamic component of its website, and if we study the code, we will only see JavaScript code. These many scripts aid in the rapid rendering of various other Facebook sites. 

Furthermore, Facebook is the creator of React.js, the most reactive JavaScript framework, which Facebook, Instagram, and WhatsApp utilize.

 

Microsoft

To develop its Edge web browser, Microsoft will need to collaborate closely with JavaScript. Because all browsers must efficiently process and execute JavaScript, Microsoft created and maintained its JavaScript engine for Edge. There has been talk of them developing a NodeJS variant that works with the Edge engine.

 

  • Microsoft has recently shown a strong interest in NodeJS. They give Node a lot of love on the Azure cloud platform. It's one of Azure's main features, and Visual Studio support for Node has been included.

 

  • Node has also been adapted for Internet of Things (IoT) applications by Microsoft. Because it is lightweight and efficient, NodeJS is ideal for IoT.

 

  • Not only this, Microsoft created and maintains the TypeScript programming language. It's a rigorous syntactical superset of JavaScript with the addition of optional static typing.

 

Google

Google, of course, employs JavaScript to provide suggestions when we start entering the search box. JavaScript is to blame for everything. Nobody can imagine using the Internet without Google, and JavaScript is responsible for Google's dynamic nature. Angular is one of the most popular front-end frameworks created by Google.

 

Walmart

Walmart is one of the world's most significant merchants, and its ability to adapt to evolving technology has always been a strength. Initially, they utilized Java, but to work on a low-power system, such as a cell phone, they switched to JavaScript with Node.js as the back-end. 

 

Walmart can use Node to deliver some reasonably advanced services to mobile users on the client-side. Tailoring content based on device type and browser capabilities save mobile shoppers a lot of time.

LinkedIn

LinkedIn is one of the social media networking sites for working and non-working professionals. It's great for people who want to make significant career changes and be noticed by the right companies.

 

Companies that are looking for competitive applicants for open positions utilize LinkedIn in the same way. In late 2011, LinkedIn transitioned from Ruby on Rails to Node.js. This transition was primarily due to LinkedIn's developers wishing to optimize their mobile app, which is now entirely written in node.js.

The transition from Ruby on Rails to Node.js reduced server resources significantly, and the software became 20 times faster than its previous versions. HTML5 also played a significant role in the development of LinkedIn's mobile app.

 

These were some of the significant industry use cases of JavaScript.

Frequently Asked Questions:

What is JavaScript?

Ans: JavaScript is a lightweight dynamic programming language primarily used for dynamic web development and app development.

What are some features of JavaScript?

Ans: Some of the features of JavaScript includes:

  1. Lightweight
  2. Dynamic
  3. Open and cross-platform

 

3. Which companies use JavaScript?

Ans: Facebook(Meta), Google, Walmart, Netflix, LinkedIn etc.

 

Key Takeaways

For accomplishing dynamic tasks on the web, several browsers use JavaScript as a scripting language. JavaScript is a dynamic programming language that allows you to perform math calculations, dynamically add HTML material to the DOM, generate dynamic style declarations, fetch content from another website, and much more.

 

JavaScript is one of the most widely used programming languages today. It's primarily utilized in the development of websites and web apps. Many multinational companies like Facebook(meta), Google, Walmart, etc., use javascript for their front-end and back-end development. This blog was all about it.

 

Happy Learning!

 

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