Introduction To Reactjs.

Introduction To Reactjs.

What is React? Why should I learn React.JS?

What is React?

React is a small, flexible and powerful open-source library for developing rich client side applications. It creates a foundation that makes building rich web applications easier. You can design 'How each part of the web page should look like', by making interactive web pages.

React is a library for building amazing user interfaces. It encourages the creation of reusable UI components, which present data that changes over time. It was developed at Facebook in 2011 and currently, it’s the most popular JS library for building user interfaces. It was popularly known as Facebook React.Js.It is also known as ReactJs and React.js. Don't get confused. It was made open source in 2013

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Note Before starting react you should have a basic knowledge of JavaScript.

Why you should learn React?

Okay, React is not the perfect solution to every problem, and it is important to know when you should use React and when you should seek an alternative. React delivers the kind of functionality that used to be available only to server-side developers but is delivered entirely on the browser. The browser has to do a lot of work each time an HTML document to which React has been applied is loaded, components have to be created and composed, expressions have to be evaluated, e.t.c

React Features?

Currently, ReactJS is gaining popularity as the best JavaScript framework among web developers. It is playing an essential role in the front-end ecosystem. The important features of ReactJS are:

- JSX:

JSX is a JavaScript syntax extension. It stands for JavaScript XML. Its an XML or HTML like syntax used by ReactJS.

- Components:

ReactJS is all about components. ReactJs application is made up of multiple components, and each components has its own logic and controls. These components can be reusable which help you maintain the code when working on large scale projects.

- One-way data binding: ReactJs is designed in such a way that follows unidirectional data flow or one way data binding. The benefits of one-way data binding give you better control throughout the application. If the data flow is in another direction, then it requires additional features. This is because components are supposed to be immutable and the data within them cannot be changed.

- Virtual DOM: A virtual DOM object is a representation of the original DOM object. It works like a one way data binding. Whenever any modifications happen in the web application, the entire UI is re-rendered in virtual DOM representation.

- Simplicity:

ReactJS uses JSX file which makes the application simple and to code as well as understand. You should know that ReactJs is a component-based approach which makes the code reuseable as you need. This makes it simple to use and learn

- Performance:

ReactJs is known to be a great performer. This makes it much better than other frameworks out there today. Why?

This is because ReactJs manages a virtual DOM. The DOM is a cross-platform and programming API which deals with HTML,XMl, or XHTML. The DOM exists in a memory. Due to this, when you create a component, you didn't write directly to the DOM. Instead you're writing virtual components that will turn into the DOM leading to a smoother and faster performance.

React has so many advantages. Like,

  • React uses virtual DOM which improves apps performance.

  • React can be used on client and server side as well as with other frameworks.

  • Component and data patterns improve readability, which helps to maintain larger apps.

The only limitation ReactJs has is it only covers the view layer of the app, hence you will still need tho choose other technologies to get a complete tooling set for development.

ReactJs is very easy to learn and more focused than some other JavaScript framework. Most businesses are now inclined to React because of its simplicity and the ease of use it provides.

Happy Learning

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