In this article we will learn what React.js is and why we should use it instead of other JavaScript frameworks like Angular.

What is React JS?

Reactjs is basically an open-source JavaScript library for building single-page application interfaces. This library is used to manage the View layer in the web world. React also allows us to create reusable UI components. React was originally created by Jordan Walke, a senior Facebook engineer. React was first used on Facebook in 2011 and then on Instagram in 2012.

React allows developers to create very large web applications that can change the date without reloading the page. The most important goals of React are simplicity, speed and scalability. It is on the user interface and only corresponds to the View layer in the MVC architecture. This library can be combined and used with other JavaScript libraries and frameworks such as Angular.

What are the features of React Js?

Let’s take a look at the important features of React:

JSX

React uses JSX for templating instead of regular JavaScript. Jsx is a JavaScript format for creating HTML DOMs as a component

React Native

A native JavaScript framework for developing mobile applications for both Android and iOS operating systems, introduced in 2015. The framework is based on the JavaScript language and the React library; This means that by mastering React, you can be far ahead of the rest in learning React Native. Note, however, that there are fundamental differences between this library and the framework in web design.

Single-Way data flow

In React, a set of immutable values ​​between components is passed as properties to HTML tags. Components can not directly change any properties, but can pass them to the call back function and Help them make changes. This process is complete with “properties flow down; actions flow up ”.

Virtual Document Object Model

React creates an in-memory cache structure. In this structure, if a change has occurred, it updates the DOM. This feature enables the programmer to rerender only the component that has changed in a wtpi change. A virtual DOM, like the DOM, is a tree of nodes. It contains the elements and attributes and the content as objects. The render () method creates a tree of React components and the change in each component causes this node to be updated.

Why React Js

Now, the main question before us is why should one use ReactJs. There are many libraries and open-source frameworks for building front-end web applications that make development easier. Let’s take a look at the advantages that React has over other frameworks and technologies. In the front-end world, It changes a lot every day, it is very difficult to spend time on new frameworks, especially since many of these frameworks are very short and can not be risked over time. So if you are looking for a technology that is one of the best Be it your own domain and have the value of risk, we suggest 100% React.

Simplicity

React is very easy to understand. You can take a well-defined approach to components, well-defined lifecycle, and use React JavaScript to learn and build professional web applications. React uses a special syntax called JSX It allows you to combine HTML and JavaScript. You do not have to use JSX for templating, and the programmer can still use JavaScript to do so. But if you do this with JSX, you will never use JavaScript for templating because of its simplicity.

Easy learning

Anyone with a background in programming can easily learn React; While Angular and Ember use a ‘Domain specific Language’ that is hard to learn. For React you need to have a brief knowledge of HTML, CSS and JavaScript (more professional).

Native approach

As I mentioned in the previous few paragraphs, React Native is based on JavaScript and Reat. So all the features we mentioned for React also apply to React Native. In addition, the code is shared between the Android and IOS platforms, and components You can use it in several projects.

Function

There are no pre-built containers for dependency. You can use Browserify, Require JS, EcmaScript 6 modules using Babel, which is automatically added to dependencies.

Testability

ReactJS applications are incredibly easy to test, so we can check our functions and components by passing parameters, states, and outputs.

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