Industrial Use case of JavaScript

Anjali Singh
3 min readAug 12, 2021

JavaScript

JavaScript is a loosely-typed client-side scripting language intended for making network-driven applications. It is used on both the client-side and server-side that allows you to make web pages interactive.

Popular JavaScript Frameworks

  • Angular: Angular is a TypeScript-based open-source web application framework led by the Angular Team at Google and by a community of individuals and corporations. Angular is a complete rewrite from the same team that built AngularJS.
  • React: React is an open-source front-end JavaScript library for building user interfaces or UI components. It is maintained by Facebook and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications.
  • jQuery: jQuery is a JavaScript library designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax. It is free, open-source software using the permissive MIT License. As of May 2019, jQuery is used by 73% of the 10 million most popular websites.

JavaScript use cases

Front End

There are three main components when it comes to front-end development: HTML, CSS, and JavaScript. HTML is the structure and content of the site, CSS (Cascading Style Sheets) makes it look pretty, and JavaScript powers the site’s general interactivity and makes it possible to build rich UI components such as image sliders, pop-ups, site navigation mega menus, form validations, tabs, accordions, and much more.

Web and mobile apps

Developers 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.

Back-end Data Loading

JavaScript gives Ajax library which helps in loading back-end information while you are doing some other processing. This truly gives a stunning encounter to your site guests.

Controlling HTML Pages

JavaScript helps in controlling HTML pages on the fly. This aids in adding and erasing any HTML tag effectively utilizing JavaScript and alter your HTML to change its look and feel dependent on various devices and necessities.

Client Notifications

You can utilize JavaScript to raise dynamic pop-ups on the pages to give various sorts of alert to your site guests.

FACEBOOK

Almost every website uses JavaScript, even if we try to use facebook’s website after disabling JavaScript, it wouldn’t allow us to log in, this may show the importance of JavaScript in Facebook. 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. The dynamic aspect to its website is provided by JavaScript, even if we inspect the code, we will end up getting only JavaScript code. These multiple scripts help to render various other pages of Facebook quickly. Additionally, Facebook is the one who created React.js, the most reactive framework of JavaScript which is also used in Facebook, Instagram, and WhatsApp.

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.

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