JavaScript and It’s use cases in Industries

JavaScript is a loosely-typed client-side scripting language that executes in the user’s browser. JavaScript interacts with HTML elements (DOM elements) in order to make an interactive web user interface.

It can be used in various activities like data validation, display popup messages, handling different events of DOM elements, modifying the style of DOM elements etc.

A very common use of JavaScript is to dynamically modify HTML and CSS to update a user interface, via the Document Object Model API.

• HTML is the markup language that we use to structure and give meaning to our web content, for example defining paragraphs, headings, and data tables, or embedding images and videos on the page.
• CSS is a language of style rules that we use to apply styling to our HTML content, for example setting background colors and fonts, and laying out our content in multiple columns.
• JavaScript is a scripting language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else.

While JavaScript is not the only client-side scripting language on the Internet, it was one of the first and is still the most widely used. Many developers believe that JavaScript is inefficient and finicky, so they have made many improvements to the language over the years.

Take a search engine for example Today, search engines almost all have an autocomplete function. The user begins typing a word into the search box and a list of possible search terms or phrases appears below. The experience is seamless. Suggested search terms appear without reloading the page. In the background, JavaScript reads the letters as the user types, sends those letters to a remote server and the server sends suggestions back.

The software on the server-side analyzes the words and runs algorithms to anticipate the user’s search term. Such programs are diabolically large and complex. The JavaScript on the client’s machine is as simple and small as possible so as not to slow down the user’s interaction. The communication between JavaScript and the server-side program is limited by the user’s bandwidth. This is why developers prioritize efficiency in JavaScript functions and make the amount of data communicated between the programs as small as possible.

Search engines, e-commerce, content management systems, responsive design, social media and phone apps would not be possible without it.

Let’s talk about JavaScript frameworks :

1. ANGULAR JS

One of the most powerful, efficient, and open-source JavaScript frameworks is Angular. Google operates this framework and is implemented to use for developing a Single Page Application (SPA). It extends the HTML into the application and interprets the attributes to perform data binding. Angular was a fairly popular choice across all industries, but strongest in finance. Developers in entertainment were the least likely to use Angular, their strongest preference being for React (65%).

2. REACT JS

Created by Facebook, the React framework has earned popularity within a short period. It is used to develop and operate the dynamic User Interface of web pages with high incoming traffic. It makes the use of a virtual DOM, and hence, the integration of the same with any application is more straightforward. It was the most popular framework with strong variations by industry. As mentioned, 65% of developers in entertainment chose it, but that fell to 46% in government and 38% in manufacturing. Manufacturing’s strongest choice for a framework was jQuery (52%), suggesting the industry is a late adopter.

3. EMBER JS

The Ember.js software came into the market in 2015, and since then, it has gained popularity with its wide application area. The features of Ember.js support two-way data binding and hence, establish a reliable platform for handling complicated User Interfaces. Popular websites like LinkedIn, Netflix, Nordstrom, and many more use the Ember.JS platform for their websites.

4. VUE JS

It was developed in the year of 2016. Its dual integration mode is one of the most attractive features for creating high-end SPA or Single Page Application. It is a much reliable platform for developing cross-platform. Around 20% of developers in most industries reported using Vue, though it was notably more popular in advertising, with 34% of developers reporting it there.

5. NODE JS

Node.js is a server-side JavaScript run-time environment, which works on cross platforms and is open-source. The framework is capable of driving asynchronous I/O with its event-driven architecture. It works in the JavaScript Runtime environment and shows JAVA’s similar properties like threading, packaging, o forming loops.

Top Companies Using JavaScript :

Medium

Medium, one of the world’s largest online publishing platforms, too, uses Node.js for their web servers. Maybe Medium web app can seem just a simple web HTML page, there is much more technology behind it, alongside all the challenges that the company faces. Medium is a data-driven platform that evolves along the users and their behaviour. Node.js is particularly useful when it comes to running A/B tests to get a better comprehension of product changes and experiment with new ideas. Dan Papuis, former software developer at Medium.

Twitter

In April 2017, Twitter released Twitter Lite, a mobile app with minimum functionality that can work with slow Internet connections. The app minimizes the data usage, is resilient on unreliable mobile networks, and takes up less than 1 MB on any device.

The Twitter team used Node.JS to build, test, and deliver this application. Before Node.JS, the company had a different technology on the back end and spent lots of time solving the operational issues.

Node.JS allowed the engineers to have the same technology and thus be more productive, spending more time on actually building the app than resolving the problems.

Uber

Uber’s matching system creates an enormous amount of supply notifications for drivers and demand requests for passengers. Besides, a ride request helps to choose the driver through the matchmaking process. Uber has built its massive matching system on Node.js.

The drivers are stored in a geospatial database that is continuously updated by each active driver on the network as they move around the city.

Uber needed a system to be reliable both to passengers and drivers. The three core sides of Node.js that made it a good fit for Uber were asynchronous I/O requests handling, quick iterations and the active open source community.

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😊 !! Happy Learning !! 😊