REACTJS FEATURES WHICH MAKES IT BEST FOR DEVELOPMENT

ReactJS is one of the most popular front-end JavaScript library in the market currently. It is basically a component-based javascript library used for building an interactive and dynamic user interface for websites and mobile applications specifically for developing single page applications where data reflects in real time. It deals with View in the MVC (Model - View - Controller).In React everything is components. The homepage is divided into small parts which merged together to complete the view. The main ReactJS Feature is the Virtual-DOM where only one-way data binding is present. But in AngularJS, there are two-way data binding. Thus if any changes would take place in the view, it is also reflected in the data and vice versa but in react.jsInstead of updating the DOM directly, React makes two copies of a Virtual DOM, the original and an updated version that reflects changes displayed in from the view. The two copies that are stored are then compared with one another. So when any changes would occur, react update the view directly that's why it preferred for the real-time application.Let’s take a look at some of the key ReactJS Features that makes it stand out from the others

Declarative:

React creates very interactive and dynamic user interface for websites and mobile applications. It basically makes simple views for each state in your application, and automatically React will efficiently update and render the components correctly when your data changes. Declarative views make your code more readable and easier to debug. For example lets see this code snippet, Here we just have a button that changes it’s color on click. For imperative it should be,And our declarative React example:The React never touches an element. it simply declares that an element must be rendered given our current state. It does not change the DOM itself. 

Virtual DOM:

In React, for every DOM object, there is a corresponding "virtual DOM object." So what does this virtual DOM object do? A virtual DOM object creates a virtual copy of the original DOM. It's a one-way data binding hence working with the virtual DOM would be quicker rather than updating the original DOM because nothing gets drawn onscreen.

Event handling:

React creates its own event system which is fully compatible with W3C object model. It provides a cross-browser interface to a native event. Besides, React event system is implemented through event delegation and also has a pool of event objects to reduce memory overhead.

JSX:

JSX means JavaScript XML. It is almost like HTML. In fact we can say it is a combination of JavaScript + XML or a XML like extension to ECMA Script. JSX makes the React components which are the building blocks of React UI, works easier by adding XML syntax to JavaScript. Definitely you can use React without JSX but JSX makes React works better. Just like XML, JSX too have tag name, attributes and children.

Performance:

React uses one-way data binding with an application architecture called Flux controls. It helps in updating the View for the user and, with Flux, it can control the application workflow. The virtual DOM have an extra advantage where it compares the new data with original DOM and automatically updates the view.

React Native:

React Native is a custom renderer for React, just like React DOM on The Web. It uses native components as building blocks instead of web components like React. To work with React Native, you need to know the basic React concepts, like JSX, components, state, and props. React Native also gives access to the features these platforms offer, apart from transforming React code to work on iOS and Android.

Component-Based:

In React the web page divided into small components to create a view (or UIs). Every part of applications visuals would be wrapped inside a self-contained module known as a component. Since component logic is written in JavaScript instead of templates, you can easily pass data through your app and keep the state out of the DOM. Components in ReactJS use to define the visuals and interactions in applications.