React JS Courses

As mentioned earlier, React.js is a JavaScript library for building web applications and mobile apps. React as a library is only concerned with the state management that renders the state to DOM (Document Object Model). This helps in creating applications via using additional libraries to improve the functionality of the client-side.

Today, the popularity of React.js is reaching new heights because it works with frontend networks.Here are some reasons React.js is becoming popular and used by everyone.

• React makes creating amazing and dynamic web pages and applications very easy. It requires very less coding and offers more functionality than any other library. Moreover, it is quite easy, unlike JavaScript, wherein the coding is complex right from the start.

• React.js uses virtual DOM, which is used for creating web and mobile applications at a rapid pace. The DOM helps in comparing the components of past states, thereby updating all the items in the actual DOM. It helps build dynamic web pages.

• Components used in building React applications are often useful and reusable. These components comprise several logics and controls which are reused. This reduces the application’s development time, thereby building the apps quickly.

React.js is a library that uses the cumulative concepts of JAVA and other frameworks. React helps in efficiently creating user interfaces using declarative code. Now, what is a declaration code? A declaration code declares every element of the application that is being created. The declaration code is used for building complex and single-page applications by utilizing all the libraries.

Look at an example below to understand the declaration code:

<App>

<NavBar/>

<Header title = “ReactJS Course”/>

<BookFilter/>

<BookList/>

<Footer/>

</App>

In this, you can clearly see that each line of code is a declaration depicting the elements of apps.

While building the client-side apps, the developers can find if the DOM (Document Object Model) is slow or not for documents of XML and HTML. It defines how the documents are accessed. To make the DOM work faster, React implements virtual DOM. Thus, virtual DOM is utilized whenever the need for reading or writing arises.

Unlike the elements of DOM, React’s components are plain and easy to create. JavaScriptThe JavaScript, in turn, becomes very fast with the help of DOM. React.js is also used with Node.js because of its design elements.

React and Angular are a bit different from each other. Let us also have a brief description of angular.

Angular is defined as a structured framework that helps in developing web applications. The developers use HTML in the form of template language, thereby allowing the syntax to express the components of the application being built/developed.

Angular is a full-fledged JavaScript framework that helps develop dynamic web and mobile apps. Now, let us look at the points of contrast between React and Angular.

So, these are the major points of difference between Angular and React. React is much more popular and commonly used compared to Angular because of some amazing features.

So, let us now discuss the features of React.

React offers some outstanding features that make it popular across the globe.

• JSX

JSX stands for JavaScript Syntactic Extension. JSX is used for describing how a user interface should appear. The developer can use JSX for writing HTML structures in the file, just like JavaScript code.For example:

const name = ‘react.js’

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

This code shows how JSX is used in React. JSX is not HTML, nor is it a string embedded in JavaScript code.

• Virtual DOM

DOM stands for Document Object Model. Virtual DOM is the first copy of Actual DOM. This lighter version is used because the actual DOM is quite slower. When the state of the object changes, the virtual DOM updates the object, unlike the actual DOM that updates everything.

• Architecture

The architecture of React is based on the Model View Controller. It is a pattern that splits the application layers between models, views, and controllers. The model is related to every UI logic, which serves as an interface between the model and view.

• Extension

React is not just a UI framework. It is a web of many extensions covering an application's structure and architecture. The building of mobile apps and rendering of servers are all due to the extensions of React. Flux and Redux are two of the most important extensions of React.

• Data Binding

React uses the one-way data binding method to make the performance quick and modular. In one-way data binding, the child components are nested in parent components, thereby developing the React projects.

• Debugging

React has broad community developers. The applications made with React are easy to test. Facebook provides the chrome extension that facilitates easy debugging and testing of React models.

So, these are the features of React.js. Well, let us see what React can do!