JavaScript & Industry Use-Cases
Published: 2021-08-23 13:45:25

JavaScript is a lightweight, open-source and cross-platform programming. It is designed for creating network-centric applications. It is complementary to and integrated with Java. It is used to add interactivity to a website.

Its usage has now extended to mobile app development, desktop app development, and game development. There are many beneficial Javascript frameworks and libraries available:

* Angular
* React
* jQuery
* Vue.js
* Node.js

**Features of JavaScript**

1.**LightWeight Scripting Language** — It is a lightweight scripting language because it is made for data handling at the browser only. It is only meant for client-side execution and that too for web applications, hence the lightweight nature of JavaScript is a great feature.

2.**Validating User’s Input** — It shows its importance while filling in forms as it can validate user input for errors and also saves time. If the user leaves a required field empty or the information is incorrect and also checks them before sending the data over to the server.

3.**Dynamic Typing** — It also provides a feature of JavaScript that supports dynamic typing which means types of the variable are defined based on the stored value.

4.**Object-Oriented Programming Support** — Starting from ES6, the concept of class and OOPs has been more refined. Also, features like Object Creation patterns (Encapsulation) and Code Reuse patterns (Inheritance) have given more importance.
5.**Functional Style** — JS uses a functional approach i.e, objects are created from the constructor functions and each constructor function represents a unique object type. Functions in JavaScript can be used as objects and can be passed to other functions too.

6.**Platform Independent** — It is platform-independent which means it is portable i.e, one can simply write the script once and run it anywhere and anytime or the JavaScript applications can run on any platform or any browser without affecting the output of the Script.

7.**Prototype-based Language** — In JavaScript, we define object prototype and then further objects can be created using this object prototype.

8.**Async Processing** — It enables asynchronous requests wherein a request is initiated and JavaScript doesn’t have to wait for the response, which at times blocks the request processing. Also starting from ES8, requests are processed parallelly which has a positive effect on the processing time, reducing it to a great extent.

9.**More control in Browser** — JavaScript provides control to the browser, being a client-side language provides many features that help developers to divide processing between browser and server hence reducing the load on servers by having basic processing, validations, temporary data saving using cookies, etc on the browser itself. It is capable of detecting the user’s browser and OS information.

**Uses of JavaScript**

1. Web Applications
2. Web Development
3. Mobile Applications
4. Game
5. Presentations
6. Server Applications
7. Web Servers

**Industry 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 is what powers its interactivity. It 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. Various banner ads have chat support, suggest content, have formed or offers social sharing they are powered by a 3rd party JavaScript plugin.

**Back-End**

Backend developers use a type of JavaScript called Node.js for backend work. The Node.js framework allows a developer to handle data updates from the front end and build scalable network applications able to process many simultaneous user requests, amongst other things. Node.js is the most popular backend framework; it is used in MERN, MEAN, and MEVN stacks.

**Google Chrome**

All web browsers need JavaScript to function and Chrome is created using HTML, CSS, Python, C, C++, and JavaScript along with 25 different libraries. Google created its browser and that is one of the most widely used browsers because of its dynamic and reliable features.
These are some of the use-cases of javaScript.

**Thank you for reading!!**