Industry Usecase of JavaScript

Introduction

JavaScript is a programming language used primarily by Web browsers to create a dynamic and interactive experience for the user. Most of the functions and applications that make the Internet indispensable to modern life are coded in some form of JavaScript.

The earliest incarnations of JavaScript were developed in the late 1990s for the Netscape Navigator Web browser. At the time, Web pages were static, offering little user interaction beyond clicking links and loading new pages. For the first time, JavaScript enabled animation, adaptive content and form validation on the page.

JavaScript did not become standardized and widely adopted until 1999. Even after standardization, browser compatibility remained an issue for over a decade.

JavaScript is used in almost every domain

• Web Applications
• Web Development
• Mobile Applications
• Server Applications
• Web Servers

What is JavaScript used for?

JavaScript is mainly used for web-based applications and web browsers. But JavaScript is also used beyond the Web in software, servers and embedded hardware controls. Here are some basic things JavaScript is used for:

1.?Adding interactive behavior?to web pages -?JavaScript allows users to interact with web pages. There are almost no limits to the things you can do with JavaScript on a web page – these are just a few examples:

• Show or hide more information with the click of a button
• Change the color?of a button when the mouse hovers over it
• Slide through a carousel of images on the homepage
• Zooming in or zooming out on an image
• Displaying a timer or count-down on a website
• Playing audio and video in a web page
• Displaying animations
• Using a drop-down hamburger menu

2. Creating web and mobile apps -?Developers can use various JavaScript frameworks for developing and building web and mobile apps. JavaScript frameworks are collections of JavaScript code libraries that provide developers with pre-written code to use for routine programming features and tasks—literally a framework to build websites or web applications around.?

Popular JavaScript front-end frameworks include React, React Native, Angular, and Vue. Many companies use Node.js, a JavaScript runtime environment built on Google Chrome’s JavaScript V8 engine. A few famous examples include PayPal, LinkedIn, Netflix, and Uber!

3. Building web servers and developing server applications -?Beyond websites and apps, developers can also use JavaScript to build simple web servers and develop the back-end infrastructure using Node.js.

4. Game development -?Of course, you can also use JavaScript to create browser games. These are a great way for beginning developers to practice their JavaScript skills.

Industry using JavaScript:

JavaScript comes under the most important one:

Case Study on Major Companies using JavaScript

1.?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.

2.?PayPal -?PayPal has obviously been using JavaScript on the front end of their website for a long time, but that’s only the beginning. The online payment giant was one of the earliest adopters of NodeJS. During an overhaul of their account overview page, they decided to try building the page in Node at the same time as their usual Java development. The NodeJS version worked out so well, that they chose to use it in production and build all client-facing applications in Node going forward. That means that most of what you see in your account is running on Node. PayPal even went as far as to create and maintain their own version of Express, called KrakenJS. It’s pretty obvious that they like JavaScript over at PayPal.

3.?Netflix?-?Like PayPal, Netflix started out using Java for just about everything. They too ran into problems with Java’s size and the time it required to develop. Over time, Netflix moved away from its more traditional structure into the cloud and started to introduce NodeJS. With Node, Netflix was able to break down pieces of their user interface into individual services. This more distributed approach was able to speed things up an alleviate stress on their servers. Today, a large portion of Netflix’s interface is running on Node.

Netflix?is one of the most popular video streaming services. Since launching globally in 2016, the company has found that many new users are not only signing up on mobile devices but are also using less-than-ideal connections to do so.

By refining the JavaScript used for Netflix.com’s sign-up process and using prefetching techniques, the developer team was able to provide a better user experience for both mobile and desktop users and offer several improvements.

• Loading and Time-to-Interactive decreased by 50% (for the logged-out desktop homepage at Netflix.com)
• JavaScript bundle size reduced by 200kB by switching from React and other client-side libraries to vanilla JavaScript. React was still used server-side.
• Prefetching HTML, CSS and JavaScript (React) reduced Time-to-Interactive by 30% for future navigations

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.

Netflix initially used Node.js to enable high-volume web streaming to over 182 million subscribers. Their three goals with this early infrastructure were to provide observability (metrics), debuggability (diagnostic tools), and availability (service registration). The result was the NodeQuark infrastructure. An application gateway authenticates and routes requests to the NodeQuark service, which then communicates with APIs and formats responses that are sent back to the client. With NodeQuark, Netflix also created a managed experience — teams could create custom API experiences for specific devices. This allows the Netflix app to run seamlessly on different devices.

Conclusion

JavaScript is a technology with a bright future. The capability and flexibility of JavaScript allow businesses to build robust software solutions that drive excellent results. Trends show that JS will witness remarkable growth in the years to come, thanks to its high adoption rate and increasing popularity. And it continues to evolve and enrich its features to meet the requirements of the modern business environment. The power of JavaScript is immense, and organizations can leverage it for building excellent web solutions; however, the final choice of technology should depend on whether it meets the specific requirements of the project.??

Thank you for reading. for now stay home stay safe and keep learning.