What is React code?

React is a declarative, efficient, and flexible JavaScript library for building user interfaces . It lets you compose complex UIs from small and isolated pieces of code called “components”. React has a few different kinds of components, but we’ll start with React.Component subclasses: class ShoppingList extends React.

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What is React used for?

React. js is an open-source JavaScript library that is used for building user interfaces specifically for single-page applications . It’s used for handling the view layer for web and mobile apps. React also allows us to create reusable UI components.

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Can I embed a react app?

Use create-react-app and then embed it into an existing project. Photo by Hal Gatewood. Let’s say you have a static website — be that on WordPress, Wix, Squarespace, or HTML from a server — and you want to add some dazzling functionality to it.

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