JavaScript in PayPal

Swarali Tannu
2 min readJun 25, 2021

Importance of JavaScript Frameworks

JavaScript is a structured, high-level programming language, which improves the clarity, quality and development time of a computer language. There are various types of js frameworks to use. Of all the high-level programming languages- PHP, Python, and C#, JavaScript is the one mainly used in web designing due to the features it provides to make designing easier.

JavaScript frameworks allows the programmer to be detached from the machine, which means that a website can work by itself with a programmer’s availability at the back-end, only to monitor it.

How JavaScript Works?

  • HTML
  • CSS
  • JavaScript


HTML is to structure the website, for instance, the videos, data tables on the web page are all designed by this. It can create static web pages with all the required content for the web page.


CSS also helps in creating static pages. The styling of HTML structure, like setting up the background colors and fonts is all CSS.


It creates animated images or updates the content. JavaScript elevates the visitor’s experience by transforming the static page created by HTML and CSS into one that can interact with them.


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.

JavaScript Frameworks

JavaScript frameworks are growing faster and enhancing the way web page interacts. Here, we see how advancements in the frameworks of JavaScripts are moving at a breakneck pace. They are the most supported platform for both developers and businesses in today’s time.

  • AngularJS 2.0 & 1.x
  • React JS
  • Meteor JS
  • Node JS
  • Ember JS
  • Mithril JS
  • Polymar JS
  • Vue JS
  • Aurela


To conclude, JavaScript is the future of web development. It all comes down to what framework is chosen, depending on the functionality and features in demand. Since JavaScript is widely used in both front-end client-side code and back-end code for servers or even game development. Moreover, the fact that the browser knows only one language, JavaScript gains its popularity. All the messages/ information transmitted must be in JavaScript. New ECMAScript standards evolve every year with better features of JavaScript.