React is a free and open-source front-end JavaScript library for building user interfaces based on components). It is maintained by Meta (formerly Facebook) and a community of individual developers and companies). React can be used to develop single-page, mobile, or server-rendered applications with frameworks like Next.js). React is a component-based front-end library responsible only for the view layer of a Model View Controller (MVC) architecture. React components implement a render() method that takes input data and returns what to display. JSX is optional and not required to use React, but it is a JavaScript syntax extension popularized by React that makes components easy to create, maintain, and delete. React provides state-of-the-art functionality and is an excellent choice for developers looking for an easy-to-use and highly productive JavaScript framework.
Some key features of React include:
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Component-based: Each component in a React application is responsible for rendering a separate, reusable piece of HTML code. The ability to nest components within other components allows you to build complex applications from simple building blocks.
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Efficient rendering: React will efficiently update and render just the right components when your data changes.
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Server-side rendering: React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before any JavaScript code loads.
React is often used in conjunction with other libraries for routing and other client-side functionality, as it is only concerned with the user interface and rendering components to the DOM).
