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Evrything you should know about ReactJS

Arpatech Mar 25, 2021
Evrything you should know about ReactJS

“Backend is the most fundamental part of an application.”

We all have heard that multiple times.

As an app developer, your main focus is the backend of the web application and you make sure that it works efficiently to support the overall application. Yes, the backend is the spine of the web app but we also know that if your application is not pleasing to the eye, you may face difficulty in selling it to the audience.

Application development is a half-done job with a poor front-end. After all, what is seen is sold. A strong visual appeal can uplift the game of your application to the next level.

To accomplish this task, you can make use of a library called ReactJS. What is ReactJS? How can it be smartly used to elevate the overall persona of your newly-developed application?

What is ReactJS?

Fundamentally, ReactJS is an open-source JavaScript library to construct flexible and dynamic user interfaces. This component-based front-end library builds the view layer of your mobile or web application.

ReactJS is considered as one of the flexible libraries as it allows the developer to use it according to their own convenience and requirement. You can develop a little part of a new feature of your app, alter the entire look, or the whole user interface of your application.

It entails the use of a few additional libraries that match the changes you would like to make in any application.

The simple use of ReactJS has helped it gain much popularity and highlights it as the shining future of the web development domain. Big enterprises such as Uber, Facebook, Airbnb, PayPal, and more use React JS for their user interface.

How does ReactJS function?

ReactJS was introduced by Facebook when a team of developers from the franchise comprehended that the Document Object Model (DOM) is confined to a programming interface for XML and HTML documents only. They realized that it only explains the documents of a logical structure and their accessibility of manipulation.

ReactJS introduces virtual DOM which it implements in JavaScript as a tree representation. Hence, when it requires to write or read to the DOM, the virtual representation is used which is a systematic and effective way to upgrade the browser’s DOM.

Contrasting to browser DOM components, React components are plain objects and are cheap to make. React DOM takes care of repairing the DOM to coordinate with the React elements. The reason for this is often that JavaScript is exceptionally quick and it is a sensible decision to maintain a DOM tree in it that accelerates its basic manipulations. Although ReactJS was conceived to be utilized within the browser, its genius design has enabled it to be used within the server with Node.js.

What Are the Advantages of ReactJS?

1.     The Data Flow

ReactJS obeys unidirectional data flow. During the designing process, developers take parent component to nest child component within. But, with the flow of data being unidirectional, the debugging becomes simple and the errors can be easily spotted and rectified.

2.    The Performance

The virtual DOM in ReactJS makes the applications comparatively faster. Moreover, Virtual DOM makes the updating easy. How? By comparing the previous states and updating the features of the Real DOM that require alterations, the updates are simple because the entire application does not have to be updated anymore.

3.    Easy Learning

From the beginners’ point of view, ReactJS can be easily learned because it is the amalgamation of JavaScript and HTML concepts. If a learner spends the right amount of time with multiple tools and frameworks, he or she can learn the ropes of ReactJS’s library with some added advantages.

4.    Web and Mobile Applications

There has been a misconception that ReactJS is only restricted to application development, which is certainly false.

The framework for ReactJS called React Native that is originated from the ReactJS itself which is extensively used for the development of the amazing visuals of mobile applications. This property makes ReactJS a dual-platform library.

5.     The Diversity

The diversity of ReactJS makes it easily accessible for other frameworks such as Vue, jQuery, Angular, and Backbone, as it is not a framework itself.

6.    The Components

Components make or break the application as they pose to be the pillar React application. Mostly, one application is made up of various components. ReactJS components can be reused in the entire application that smartly decreases the development time of an application. These components encompass strong logics that assists in reusability.

What are the requirements to learn ReactJS?

For people with a keen interest in ReactJS, there are a few prerequisites that will pave the way for quick learning such as

  1. HTML
  2. Handful knowledge of JavaScript and ES6
  3. CSS
  4. Basic understanding of Node and NPM
  5. Elementary programming concepts such as arrays, classes, functions, objects, etc.


A course for the learning of ReactJS can take you a long way. With the help of some basic understanding, you can make the most of this rapidly growing library. Learn it today and take the visual magic of your application one step ahead.

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