React.js Architecture

React.js Architecture

Hello folks, in today’s article we’ll be discussing the architecture of React.js.

The foundation of the React library is strong. It’s easy to use, adaptable, and expandable. React is a library for creating user interfaces in web applications, as we learned before. The fundamental goal of React is to allow developers to construct user interfaces using only JavaScript. Generally, each user interface library presents a new template language (which we must know) for developing the user interface, as well as the ability to put logic either within the template or separately.

The HTML DOM is represented by React elements in JavaScript. The React API is provided by React. To build a React Element, use the createElement method.


JSX is a user interface design plugin for JavaScript. It is an XML-based, extensible language that can be used to support HTML syntax with few changes. To develop a user interface, JSX can be compiled into React Elements.

Component in React

The primary pillar of a React application is the React component. Its user interface is built with React elements and JSX. React component is a pure JavaScript function or a JavaScript class (which extends the React.component class). Properties, state management, life cycle, and event handler are all included in the React component. React components can perform both simple and complex reasoning.


To make React elements, you’ll need this. It anticipates three variables.

Element attributes as an object Element tag.

Content of the element – It can also include nested React elements.


The element is rendered into the container using this method. It anticipates two parameters.

The webpage’s React Element OR JSX Root Element

We can view the React application’s process by examining the application. The user interface is built with a React component (written in either JSX or React element format) and the container to render the user interface is passed to the ReactDOM.render method by the React app.

The JSX or React element is processed by ReactDOM.render, which produces Virtual DOM. The container’s virtual DOM will be combined and rendered.

React Application’s Architecture

The React library is merely a user interface library that does not impose any particular structure for developing a complicated application. Developers are able to use whatever design pattern they like. The React community promotes a certain design pattern. The flux pattern is one of those design patterns. Higher-Order Components, Context, Render props, Refs, and other ideas in the React library help you create more useful code. React Hook is a growing approach for managing state in large projects. Let’s take a look at a React application’s high-level architecture.

  • A single root component is used to launch a React app.
  • Single or several components are used to create the root component.
  • Each component can be nested to any level with other components.
  • Composition is a fundamental notion in the React library. As a result, rather than inheriting one component from another, each component is constructed by assembling smaller components.
  • The majority of the elements are user interface elements.
  • Third-party components for routing, animation, state management, and other purposes can be included in a React project.

How does React architecture help in web development?

React.js does not implement an architecture pattern, unlike other UI libraries and frameworks. It is simply a view that is tailored to the user interface. A tree of numerous React components may be found beneath the user interface. 

Now comes the fascinating part: all React components can hold a state, but it’s not required. By state, we mean the data that must be tracked in order for the event to function. Furthermore, based on the actions done by your user, the state of your application changes from time to time.

What appears on an application’s UI is solely determined by the state of data.

The local state is an out-of-the-box feature provided by React. The mechanism, however, is insufficient in and of itself for usage in real-world applications. Redux and other state management tools come in handy in this situation.


This was about app architecture in React.js. 

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