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React is a JavaScript framework that allows designers to create rich UIs that are rendered efficiently. It offers a lot of features, but if you’re just getting started with building an app with it, there are some important things you should know before diving in

What is React?

React is a JavaScript library that enables developers to build user interfaces. The library was created by Facebook and Instagram to improve the speed and efficiency of their websites, apps, and mobile websites. It runs on top of the JavaScript Virtual DOM. This means that you can use it for any language or platform that implements the virtual-DOM specification.

How does react work?

React is an open-source library for building user interfaces. It is based on the Virtual DOM and uses JSX, a special syntax to describe UI components in XML format. It allows developers to rapidly create interactive markup using an intuitive programming language that feels like

Using JSX

JSX is an XML-like language for React. It provides a simplified syntax for writing React components that don’t require JavaScript, while still using the full power of JS.

Components in React

Components are the building blocks of React. They allow you to break your app into small pieces which you can compose them with each other and most importantly, re-use them wherever you need them. You can think of components as mini-apps that do not have access to any outside data or functionality, just like mini-apps in a phone.

Events

React provides a number of tools that can help manage event loops, callbacks, and even the creation of custom events that other libraries might not have.

Props

Props are an important part of the React API. They store data for visual components.

State

State is a way to define the “current” or “ongoing” state of an application. It’s a mechanism that React uses to enable developers to keep their views up-to-date without having to constantly re-render them. State is usually considered as a single feature, but some libraries have added some extra features, such as automatically invalidating props when new data has been added or removed.

Lifecycle Methods

Sometimes creating your own component can be complicated. However, by using some simple methods there are times when you’ll just need to get the state of an object rather than handle changes yourself. This blog will go through the life cycle of a React Component.

Mixins

A mixin is a function that takes in an object and returns a new object with some properties of the parent object. If you have ever used React, then you might already be familiar with the idea of mixins.

Conclusion

React is an open-source JavaScript library for building user interfaces. It supports virtual DOM diffing and thus why, its components are updated in most cases without the need to re-render them. Moreover, React’s built-in tooling is just as powerful, with a compiler that turns lower-level JSX code into reusable React Elements.

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