Industrial use case of Java Script
JavaScript is a client-side, object-based scripting language that is used to handle and validate client-side data. JavaScript is also used for making the user interface of the web pages more dynamic, making it responsive to events like the movement of the mouse, mouse click on a certain HTML element, a button click, etc, using which we can improve the user experience.
JavaScript Frameworks:
JS frameworks are JavaScript programming libraries that have pre-written code to use for standard programming functions and tasks. It’s a framework to create websites or web applications around. Here are some popular frameworks:
Ract.js, Vue.js, Metro js, polymer.js, Oriole js, Backbone.js, Node.js, jQuery, Express.js,
Companies That Are Using JavaScript:
1. Microsoft
Okay, so you’re probably not going to find JavaScript powering Windows anytime soon, but Microsoft relies on JavaScript for a whole lot else.
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. It's 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 for IoT because it’s lightweight and efficient.
2. 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 and alleviate stress on their servers. Today, a large portion of Netflix’s interface is running on Node.
3. Uber
Uber needs to handle loads of data in real-time. They have millions of requests coming in continuously, and that does not just hit on a page. Uber needs to track driver locations, rider locations, and incoming ride requests. It has to seamlessly sort that data and match riders as fast as possible.
All of that plays to NodeJS’s and JavaScript’s strengths. Node is designed to handle requests and handoff data quickly. Its asynchronous capabilities are a huge part of that. Node is central to Uber’s user-facing stack for just that reason.
4. LinkedIn
LinkedIn relies on NodeJS for its mobile site. A few years back, LinkedIn used Rails for its mobile site. As with 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 LinkedIn developers.
5. 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 Facebook.com as well as Instagram and WhatsApp.
6. Google
How doesn’t Google use JavaScript? Seriously, it’s everywhere. Google’s search results spring up as your typing gets there with JavaScript. The Gmail web client is powered by JavaScript. Google Docs? Yeah, that’s JavaScript too.
Google develops and usually opens sources its 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.
These are only a few examples, but you can certainly find more. So much of the web runs on JavaScript, it’d be much harder to find a company that doesn’t use JavaScript in some way. These companies are among the largest tech companies in the world. Many are also running the largest production deployments of NodeJS. The others are responsible for important parts of the JavaScript ecosystem as a whole.
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