What is React.js and its features?

What is React.js?

React.js is a javascript open-source library that is used for creating user interfaces(UI), especially for single-page applications. It is used for controlling the view layer for mobile and web apps. React also permits us to build reusable UI components. Jordan Walke created react.js first, a software engineer working at Facebook.

React library allows developers to code and create large web applications that can make changes in data without reloading the whole page. React.js works on the user interfaces which is the front-end of the application. The main purpose of introducing React is to be fast, simple, and scalable. It can be also used with the combination of other Javascript frameworks or libraries, such as AngularJS in MVC.

What are the ReactJs Library features?

React.js properties are determined as follows:

1.ReactJs is Simple to understand.

2.ReactJs is a component-based library.

3.ReactJs is extensive.

4.ReactJs is fast and easy to learn.

5.ReactJs is declarative.

6.ReactJs supports server-side activities.

The main Features of ReactJs are as Follows:

1.JSX 

In React, JSX is used instead of regular Javascript for templating. JSX is nothing but simple Javascript that allows using the HTML tag syntax to render subcomponents and HTML quoting. HTML syntax is then processed into javascript calls of ReactJs Framework.

2.React Native

React has native libraries that provide the react architecture to native applications like Android, IOS, and UPD. These libraries were announced by Facebook in the year 2015.

React-Native is a framework using only javascript in creating mobile-friendly applications. It uses a design that is the same as react, letting you include rich mobile-friendly UI library components. It uses the same fundamental UI creating blocks as regular Andriod or IOS apps. The best part of using react-native is to adopt components written in Java, Objective-C, or Swift.

3.Single-Way Data flow

In React we have HTML tags that pass a set of immutable values to the components renderer as properties. The components cannot modify any properties directly but can pass a callback function which can help us to do modifications. This whole process is known as "properties flow down; actions flow up".

4.Virtual Document object model 

React builds an in-memory data structure cache that figures the changes made and then updates them into a respective browser. This allows a special feature that is enabled for the programmer to code as if the whole page is rendered on each change whereas React library only renders the components that change in the web.

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