What is ReactJS? [Reasons + Features of Using ReactJS]


Published On:

  November 08, 2022
Read Time 14.56 Minute Read
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What is ReactJS? [Reasons + Features of Using ReactJS]

Nowadays, the demand for mobile and web application development is increasing day by day. So, it becomes essential to understand the concept of front-end frameworks that can make your work easier.

One such popular front-end JavaScript library is ReactJS. You can refer to React.JS in many ways like React or ReactJS. And if we talk about Fortune 500 companies, they use ReactJS.

Do you know that ReactJS is one of the most commonly used web frameworks among developers worldwide, as of 2021?

Here, we will discuss some of the basic concepts of what is ReactJS and its features introduced in this blog post to make a clear understanding of opting for React framework rather than other Javascript frameworks.

What is ReactJS?

Jordan Walke is the creator of ReactJS. The first deployment of React was done on Facebook’s newsfeed in the year 2011 and then in 2012 on Instagram.

An open-source library used explicitly for building robust user interfaces for SPAs (Single Page Applications) is ReactJS. React is a client-side JavaScript library, which means it runs on the client/user’s machine in the browser as opposed to running on a server.

React makes it easy for developers to create web applications that can change or synchronise your data without reloading the page.  The primary purpose of React is that it can be used to handle the view layer for web and mobile apps. It also allows the ReactJS developers to create reusable UI components.

What is ReactJS Used For?

As defined earlier, React is nothing but a JavaScript library that makes it easy for ReactJS developers to design and build user interfaces or UIs. User interfaces are the set of on-screen menus, search bars, buttons, and someone that can efficiently interacts with to use specifically for websites and web applications.

Just before the launch of the ReactJS framework, it was pretty challenging for the React developers to build UIs by hand by specifically using “vanilla JavaScript” (plain JavaScript language) or with minimal UI-focused React predecessors like jQuery.

In simple words, React is a boon for dealing with longer development times and plenty of opportunities for errors and bugs. So, in 2011, Jordan Walke came up with an idea to launch React JS to improve UI development.

In addition to providing reusable React library code to save development time and reduce the chance of coding errors), React comes with two key features that add to its appeal for JavaScript developers:

  • JSX
  • Virtual DOM

To get an even better understanding of React JS and why you should use it, let’s take a look at both concept in detail in the next section.

Top 7 Reasons for Using ReactJS For Web Development

Now, it’s time to highlight some of the reasons that will clear your doubts on why React is better than other Javascript frameworks.


  1. Create Dynamic Applications Faster

    Compared to Javascript, React makes it easy for the developers to deal with less coding and offers more functionality. So, it will help you get rid of some complex coding and make the dynamic applications faster and safer. One of the best option is to consult the best ReactJS development company that will help you design and build web app faster.

  2. Improve Application Performance

    With its active use of virtual DOM (Document Object Model), React is solely responsible for designing and building web applications faster. Yes, you read it right.

    The working process of virtual DOM is relatively simple. First, the comparison of the component’s previous state is done and is updated only when the items in RealDOM are changed. So, you do not have to update all the components again, as we usually do in conventional web applications.

  3. Make Use of Reusable Components

    For any React application, components are the heart of it. A single app may have multiple components. All such components typically have their logic and coding behind them.

    The good part of React is that you can add as many components without worrying about the application’s performance. You can even reuse them multiple times.

  4. Follow Unidirectional Data Flow

    React follows a unidirectional data flow. When you design a new React app, you often nest child components within parent components. Right?

    Often, it’s one of the best practices that you need to follow.
    The data flows in a single direction in React, making it easy for the developers to debug errors and identify where a problem occurs in an application at the moment in question.

  5. Deal with Small Learning Curve

    The application development with React is easy, and you can quickly learn React application development faster. React combines the concepts of core HTML and Javascripts with some additional functionality.

  6. Develop Both Web and Mobile Apps

    React is solely responsible for developing applications for both web and mobile-based. 

    React supports a framework called React Native, which allows the developers to create responsive mobile applications.

  7. Perform Easy Debugging with Dedicated Tools

    Facebook has released a Chrome extension that can be used to debug React applications. This makes the process of debugging React web applications faster and easier.

Easily Develop Robust User Interface With Our ReactJS Development

Albiorix is a ReactJS development company having a team of expert ReactJS developers that can efficiently build web applications that drive business growth.

Best 8 Features of ReactJS

ReactJS is nowadays gaining quick popularity among web developers as the best Javascript framework for developing web applications. It is playing an essential role in the front-end ecosystem. Let’s highlight some of the major advantages of ReactJS.

key features of reactjs

  1. JSX – JavaScript Syntax Extension

    JSX, a Javascript syntax extension, is usually used with React to represent how the user interface should look.

    JSX allows the developers to write an HTML coding structure in the same file where the Javascript code is written. Moreover, React makes the coding easier to understand and debug.

    Let’s go ahead with a straightforward example of React that represents the implementation of JSX.

    const name = Albiorix Technology;
    const greet = <h1>Hello, {name}</h1>;

    As you can see in the code, it’s neither a string nor HTML. Instead, it embeds HTML into JavaScript code.

    Related Post: Angular vs React

  2. Virtual DOM

    All the representations of the “real” DOM are kept in the memory in React, and that is “virtual” DOM (VDOM).

    React keeps a lightweight representation of the “real” DOM in the memory, and that is known as the “virtual” DOM (VDOM).

    If we talk about manipulation, real DOM is much slower than VDOM. The primary reason behind it is that it gets nothing drawn on the screen when you change the code.

    For example, when you make any change in the object’s state, VDOM is responsible only for that particular object, rather than updating all the objects available.

    To make it simple for you, let’s understand the meaning of DOM and how it works.


    DOM treats an XML or HTML document as a tree structure in which each node is an object representing a part of the document.

    The interaction of Virtual DOM and React DOM with each other is very straightforward.

    • A VDOM gets updated only when there is any specific object change in React app.
    • A comparison with the previous state is performed, and then only the update is done for that specific object in real DOM, rather than updating all the available objects.

    As compared to other frameworks, this will lead to fast development.

  3. Performance

    As we know, React uses VDOM and makes the web applications run much faster than those developed with alternate front-end frameworks. 

    React breaks a complex user interface into individual components, allowing multiple users to work on each component simultaneously, speeding up the development time.

  4. One-way Data Binding

    This remarkable feature of React keeps everything modular and fast.

    With its unidirectional data flow, React allows the developers to nest child components within parent components during the designing phase of React app development.

    A developer has complete control over the whole application, and most importantly, they are aware of where and when an error occurs.

  5. Debugging

    The testing of React applications is made easy, and it’s just due to a large developer community. The excellent part of React is that Facebook provides a small browser extension that makes React debugging faster and easier, as you can see in the below figure.

    reactjs devtools

    Once you add the extension, a React tab will be made available in the developer tools options in the Chrome browser. So, the developers can quickly inspect React components directly.

    Now, let’s take a look at React’s essential concepts.

  6. Components

    A component is essentially a piece of the user interface. React splits the UI into independent, reusable parts that can be processed separately.

    Generally, there are two main types of components in React.

    • Stateless Functional components
    • Stateful Class component

    First, we’ll see the meaning of stateless components. They have no state of their own and only contain a render method.

    They may derive data from other components as props (properties).

    function Example(props) { return <h1>Welcome to {props.name}</h1>;

    On the other hand, stateful class components can hold and manage their state and have a separate render method for returning JSX on the screen. Therefore, as they have a state, so we call it a Stateful component.

    class Example extends React.Component {render() {
    return <h1>Welcome to {this.props.name}</h1>;


    The state is a built-in React object that is used to contain data or information about the component. A component’s state can change over time; whenever it changes, the component re-renders.

    The change in state can happen as a response to user action or system-generated events, and these changes determine the behavior of the component and how it will render.

    class Example extends React.Component {state = {
    name: "World"
    updateName() {
    this.setState({ name: "Albiorix Technology" });
    render() {


    React Props (properties) is a React built-in object that stores a tag’s attributes and works similar to the HTML attributes.

    It provides a way to pass data from one component to other components in the same way as arguments are passed in a function.

    These are the common ReactJS advantages that the developers need to take care of. Meanwhile, you can have a look at some of the best reasons for using ReactJS for front-end development.

    Final Thoughts

    To summarize, ReactJS

    • Is an open-source javascript library designed by Facebook to create single-page web or mobile applications.
    • Allows you to create reusable UI components.
    • Makes it easy for the developers to create web apps that can change data, without reloading the web page.
    • Easily creates virtual data tree and detects new changes and updates the UI accordingly.
    • Enables you to deal with data flow always in a single direction.

    ReactJS is a powerful framework that is specifically used by multiple developers globally. It allows the developers to design and build web applications more robust as compared to other front-end frameworks.

    I hope you got the basic overview of what is ReactJS. We have come across various advantages of using ReactJS for better design and deployment.

    What are you waiting for? Build your web and mobile apps with our ReactJS development solutions today and enhance the performance of your applications.

    Hardik Thakker is a Co-Founder & CEO at Albiorix Technology. Having more than 12+ years of experience in handling the development team at a pace, he is totally involved in managing the overall aspects of the full-stack development processes. He possess strong expertise in writing the technical articles and completely believes in following Agile methodology.

Frequently Asked Questions

What is AngularJS Vs ReactJS?

It becomes easy for you to deal with front-end development services using ReactJS and AngularJS framework. But, it depends on you how you need to overcome the Angular Vs React difference in detail before moving ahead with front-end development.

What website use Angular?

Generally, there are many websites built using the Angular framework and some of them are mentioned below:

  • Facebook
  • Instagram
  • Netflix
  • Reddit
  • Uber
  • Airbnb
What is React and Vue?

Vue. js and React. js are JavaScript-based toolkit systems. They help build dynamic user interfaces. Regarding their concept, the whole UI is the data, and every change leads to new functions

What is ReactJS and NodeJS?

React is a front-end framework while NodeJS is a back-end framework. React and Node. js are two of the most popular open-source JavaScript frameworks, but they differ in their approach to a number of tasks. For example, while React is mostly used for building websites and user interfaces, Node enables developers to build server-side code.

What is ReactJS and React Native?

ReactJS is a JavaScript library, supporting both front-end web and being run on a server, for building user interfaces and web applications. It follows the concept of reusable components. While React Native is a mobile framework that makes use of the JavaScript engine available on the host, allowing you to build mobile applications for different platforms (iOS, Android, and Windows Mobile).

Next JS Vs React: Which One is Better?

That’s a great question but it’s not right! Using a framework for building web applications depends on your requirements, cost, and various other development requirements. If we talk about Next JS Vs React, both are great technology providing you with the best development experience.

Hardik Thakker

Hardik Thakker is a Co-Founder & CEO at Albiorix Technology. Having more than 12+ years of experience in handling the development team at a pace, he is totally involved in managing the overall aspects of the full-stack development processes. He possess strong expertise in writing the technical articles and completely believes in following Agile methodology.

Key Clients

Adobe -Albiorix Client
Sony Albiorix Client
SEGA Albiorix Client
Roche Albiorix Client
Hotel- Albiorix Client
AXA- Albioirx Client
Booking.Com- The Albiorix Client
Rental Cars -Albiorix Client
Covantex - Albiorix Client
MwareTV Albiorix client

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