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React Virtual DOM

Why React JS is most used web platform?

18 April 2022 by Kira Intrilogy


One should always keep updated from the latest trends and new concerns on the technology for the market growth. Recently a web platform is well booming which is React JS because of its simple to use and much informative as well.

A front-end JavaScript toolkit for building user interfaces based on UI elements that is open-source and free. Meta, together with a number of unaffiliated programmers and companies, keep it updated. Since its debut in May 2013, React has emerged as the most popular front end for web development.

Developers found the answer they were seeking for with React JS. It employs JSX, a special syntax that enables the application of HTML tag syntax and HTML quotes for generating particular sub components. This is highly beneficial in supporting the development of machine-readable programme even while compounding components into a single- time verified file.The future of developers are mostly visioned with React JS as it has highly used by the developers. As per the survey approx 8787 Industries had implemented with React JS

Aspects (Features)

Virtual DOM

React treats every element as a component, whether it is a class component or a functional component.State may exist within a component. Simply explained, whenever the state of any component is updated, react changes its Virtual DOM tree. This happens each time we make a modification to our JSX file. Although it would appear to be inefficient, updating the virtual DOM doesn't need much time, therefore the cost is not really substantial. At any given time, React keeps two Virtual DOMs, one of which is the updated Virtual DOM and the other of which is simply the pre-update version of the updated Virtual DOM. In order to determine what specific changes have been made to the DOM, such as which components have changed, it now compares the pre-update version with the updated Virtual DOM. This procedure of comparison between the current Virtual DOM tree and the previous one is known as ‘diffing’. React updates only those objects on the real DOM once it determines precisely what has changed. Updates to the real DOM are made using batch updates in React. It simply means that batches of changes to the real DOM are transmitted rather than a single update for every time a component's state changes. React accomplishes this most effectively by guaranteeing that the Real DOM receives batch changes to re-render the UI. As we've seen, re-rendering the user interface is the most expensive component of the process. This entire process of translating updates to the real DOM is called Reconciliation

Unidirectional Data Flow

Data can move in only one pathway on transferring the different parts of program with React the data from parent is called Prop where you can transfer data only with prop to child components on which child components cannot update or modify on their own they must clean the data flow better. Thus, it only affect the child component not to prop

  • Debugging is much simpler when there is one-way data flow. The developer can conduct a more effective dry run (or employ tools) when they are aware of the data's origin and destination.
  • The programme is less likely to include errors and the developer has more control when data only flows in one direction.
  • A process is efficient since excess resources are not squandered because the used libraries are aware of the restrictions and requirements of the unidirectional flow.

Composable Components

In contemporary web UI libraries and frameworks, this feature is typical. But it's crucial to bring it up and bear in mind. Reusable components have many advantages for web development, including greater control and cheaper maintenance costs, quicker development to boost productivity and income, faster creation and delivery of applications, and more apps with higher quality in less time.

Server Side Rendering Support

Server Side Rendering, SSR is the capacity of a JavaScript application to render on the server rather than in the browser.

  • It is helpful in faster first page loading time
  • Helps in easily gathering the metadata if the people are sharing the page on social media
  • Search engines cannot correctly and efficiently index applications that only render client-side, which makes it crucial for SEO. Despite Google's most recent indexing advancements, there are still alternative search engines, and Google itself isn't flawless. Additionally, client-side loading is bad for performance because Google likes websites with quick load times.

Companies Website built with the help of React JS


Netflix delivers TV shows and movies over the internet to TVs, computers, and mobile devices. People utilize VPNs to get the US version since they are so well-liked. They were among the first companies, founded in 1997, to recognize the existence of online piracy.

To maintain a consistent developer experience across all of Netflix's web pages, which are all server-side rendered React pages that serve the generated HTML before serving the client-side application, it was crucial to maintain the newly optimized homepage's structure.


Salesforce is a global cloud computing company that develops CRM solutions and provides business software on a subscription basis. As being a language React JS has been created by Facebook Meta that makes it easier to create and maintain HTML views in JavaScript. This enables a more modular design when creating a web application that works with Salesforce.


Airbnb which is an online community marketplace allows users to publish, find, and book rooms all around the world. Airbnb have recognized how important mobile was becoming to there business eventually not having much mobile engineers to reach there goals they started to find there alternative options and came up with react from which they built there website. Within Airbnb, it has been a very successful and well-liked web framework.

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