JAVASCRIPT : How it is important in IT industry?

Hello Everyone 😀

In this article, we’ll discuss about the importance of Javascript and it’s use-cases in IT industry and in Digital Marketing. Generally, We think that Javascript is one of the designing language used in web development but today ,we’ll get to know the exact facts behind this as Javascript is a programming language🌠.

Let’s start with some introduction….🌻

JavaScript is a type of code used for programming on the web. It is one of the three main types of code used on the internet (along with HTML and CSS) and it is a very versatile and comparatively simple programming language.

JavaScript is an object-oriented programming language⚡, which means it defines both the data type and the operations or functions that can be applied to that data. The data structure as a whole — data type and functions — then becomes an “object,” sort of like a building block. Developers can then create relationships between objects.

JavaScript is also a client-side language⚡, which means the source code is processed by the web browser, not the web server. That means those functions we were talking about before can run without having to communicate with the server.

For example: Say you’ve got a form on a landing page with several required fields. A JavaScript function can be used to check the form to ensure all required fields have been filled out and can produce an error message if something’s missing, without any information actually being passed to the server.

Therefore, We can say that “JavaScript’s usefulness for webpages — it allows the page to respond to a user’s actions without loading an entirely new page, and therefore enables developers to create an interactive user experience.”💫

Role of JavaScript in Digital Marketing

As a digital marketer👩‍💻 thirsty for knowledge in all things inbound marketing, there’s a good chance you’ve experienced the benefits of JavaScript coding already, even if you didn’t know it.

If you’re a HubSpot user, then JavaScript is what your forms are built in, and any customization should be done by a programmer familiar with JavaScript. If you use tracking code, like Google Analytics, to track users’ actions your website, the snippet of code doing that work is JavaScript.

There are, of course, limitations to what JavaScript can do. Whether you’re working with an in-house programmer, an agency, or a contract developer, it’s important to discuss any major website changes and has realistic expectations of capability and time.

Benefits of JavaScript

1. To Advance Your Knowledge to Audit JavaScript on Websites

Whether or not you deal with web apps built with popular frameworks (e.g., Angular, Vue), the chances are that your website is using a JavaScript library like React, jQuery, or Bootstrap.

(And perhaps even some custom JavaScript code for a specific purpose.) Learning to automate tasks with JavaScript will help you build a more solid foundation to dissect how JavaScript or its implementation may be affecting your site’s organic performance.

2. To Understand and Use New Exciting Technologies Based on JavaScript

The web development industry moves at an incredibly fast pace. Hence, new transformative technologies emerge constantly, and JavaScript is at the center of it.

By learning JavaScript, you’ll be able to better understand technologies like service workers, which may directly affect SEO and be leveraged to its benefit.



Additionally, JavaScript engines like Google’s V8 are getting better every year. JavaScript’s future only looks brighter.

3. To Use Tools Like Google Tag Manager That Rely on JavaScript to Work

If you work in SEO, you may be familiar with Tag Management Systems like Google Tag Manager or Tealium. These services use JavaScript to insert code (or tags) into websites.

By learning JavaScript, you will be better equipped to understand what these tags are doing and potentially create, manage and debug them on your website.

4. To Build or Enhance Your Own Websites with JavaScript

One of the great things about learning to code in JavaScript is that it will help you to build websites as side projects or testing grounds for SEO experiments.

There is no better way to understand something than by getting your hands dive in it, especially if what you want to test relies on JavaScript.

Use-Cases in IT industry

There’s no denying that JavaScript is everywhere, but just how are some of the world’s largest tech companies using JavaScript. For below given companies, JavaScript is immensely important, and that doesn’t look like it’s going to change any time soon.

💠 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.

💠 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.

💠 Uber

Uber needs to handle loads of data in real time. They have millions of requests coming in continuously, and that’s not just hits 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 hand off data quickly. It’s asynchronous capabilities are a huge part of that. Node is central to Uber’s user facing stack for just that reason.

💠 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 as well as Instagram and WhatsApp.

💠 Google

How doesn’t Google use JavaScript? Seriously, it’s everywhere. Google’s search results that spring up as your typing get there with JavaScript. The Gmail web client is powered by JavaScript. Google Docs? Yeah, that’s JavaScript too.

Google develops and usually open sources it’s 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. Chrome, being a web browser, needed a JavaScript engine, so Google also made V8. V8 not only powers Chrome, it’s at the heart of NodeJS. So, without Google, there would be no Node.✨

These companies are among the largest tech companies in the world. Many are also running the largest production deployments of various types of JS such as AngularJS, NodeJS, etc. The others are responsible for important parts of the JavaScript ecosystem as a whole.

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. Therefore, JavaScript is a highly used common language, used everywhere.

Thankyou for reading my article😌 and feel free to connect with me on Linkedin.✌️🤩




Aeromodeller|Passionate|Technoholic|Learner|Technical writer

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Lalita Sharma

Lalita Sharma

Aeromodeller|Passionate|Technoholic|Learner|Technical writer

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