How does React work?
Tags: javascript, react, tutorial, neeajreact
Published: 2022-12-04 19:04:13

As of 2021, React JS emerged as the most popular web framework among software developers all over the globe. As over 1,300 developers and 94,000 websites use React JS and with more and more software professionals embracing React JS every year, it’s hardly surprising that this emerging framework is known as ‘The Future of Web Development”.

 

However, if you’re wondering what is react js and why it is used, what is React coding, what are the benefits of using react js and why is it becoming the software world’s popular favorite we will take you through a quick overview. The benefits of React Native app development are endless!

 

Here’s what you need to know about React JS and why it is taking massive strides in the ecosystem of front-end development.
`Essentials of React JS to be aware of`
1.`Components`

React components functions make up the vital building blocks of every React application. Most apps come with several React component types and include React component naming conventions. 

 

What is a React component style? It’s a user interface element. React classifies the user interface into two separate, reusable components which can be independently managed. 

`Functional components`: Also known as stateless components as they do not have a state of their own. As props, they may extract data from other components (properties).
`Class components`: These components come with a specific render function for returning JSX to the screen and may keep and control their condition. They are also known as stateful components since they can have a state. 
 

2) `Properties (React Component Props)`

Properties or Props are built-in React object that saves the value of a tag’s attributes and function similarly to HTML attributes. It makes it possible to send data from one component to another like arguments are passed in a function. 

 

3) `State`

The state object is a built-in React object that stores information or data about the component. As time goes by, the component needs to be re-rendered when its state changes. The component’s state may change owing to user action or system-generated events. These changes affect the component’s behavior. 

**How does React JS work?**
The upside of using React JS is that you can infuse HTML code with JavaScript. But what are the benefits of jsx (JavaScript XML)? 

- When building client-side apps, a team of Facebook developers came to the understanding that the DOM (Document Object Model) is slow.

- DOM is an application programming interface (API) for HTML and XML documents which shows the logical structure of documents and how a document is manipulated and accessed. 

- To make it faster, React implements a virtual DOM which is a DOM tree representation in JavaScript. 

- When there is a need to read and write to the DOM, it uses its virtual representation of it. 

- Following this, the virtual DOM will attempt to locate the most effective manner to update the DOM of the browser. 
 

You can create a representation of a DOM node by declaring the ‘element’ function in React. Unlike browser DOM elements, React elements are plain objects and can be created affordably. 

 

React DOM looks after updating the DOM to blend with the React elements. This is because JavaScript is super prompt and keeping a DOM tree in it to speed up its manipulation is rewarding. 

 

While React was created to be used in the browser, its design makes it advantageous to use in the server with Node. JS. But how does Node js work with React? The best platform for hosting and operating web servers for React-based apps is known to be Node JS. The main explanation for this is that Node uses an NPM to install all new updates and packages.

![React](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zpup156yksh2930vh76l.gif)