Zero to Hero in React JS

                           

                             Introduction to the React JS




What is React JS?


In simple terms of words, React JS is a web framework. It is a javascript library that use to build user interfaces. React,React.js are other names for React JS. React is mainly used for user interfaces with single-page applications. you might be wondering whether react is frontend or backend? of course, it is used as a frontend library which runs in the browser. React helps developers to develop with high efficiency and Security. It also helps in cost reduction.

Pros of React Js


Provides a better user experience

The programming concept called virtual DOM provides the user with a better experience and it helps developers to enhance their speed while coding. If you consider the structure of DOM it has a tree form. When the user inputs and queries are changing the server continuously check for these changes and it enters a process of providing responses. So for a proper response, it requires to update the DOM tree. But it is not practical to update the whole tree when it consists of thousands of elements. This was the problem with traditional DOM. At this point, the React team introduced virtual DOM in order to increase the speed of the updates. Without affecting the other parts of interface it increases the speed of the updates and it supports developers in developing a highly dynamic UI.

Reusability of react components

The reusability of React components increases work efficiency. It makes developer's work easier.
Because of this ability designers don't need to design the same assets again and again.

Open Source

Since this is an open-source Facebook library it is completely open to the community. React becoming more trending because more than 1200 contributors from all around the world are working with this library.

Provides a stable code

The special feature called "downward data binding" in React JS helps us to keep the parent stable despite the changes to the child. In here developers are allowed to modify the state of an object and apply updates. This helps to keep the code stable.

Use of Redux

 Redux is a javascript library that used to manage the state of the applications. With React we can use Redux. Without using child component to access the application state Redux allows storing the state of an application in a single object. So that other components can access the application directly.


Cons of React JS


High pace of development

The main disadvantage of React JS is that the environment is continuously changing. So the developers have to find new ways of doing things. And it is still uncomfortable to go on with such a pace.

Low standard Documentation

Since the technologies of React are introducing and updating very fast the community members think that they haven't enough time to write proper documentation. Because of this most developers are writing their own documentation when they use new and specific tools for their projects.

JSX

JSX mix HTML with Javascript.So we call this a syntax extension. Most Developers complain that JSX acts as a barrier when it comes to developing with React because of it's competitively.


Apps using React JS



You will be surprised to hear that the number of internet giants is based on React JS.

Here are few:

Facebook
Instagram
Whatsapp
Netflix
New York Times
Yahoo
Dropbox
Codecademy
Vivaldi Browser
Khan Academy






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