React is famous for building single-page applications and mobile apps.ReactJs follows the Model View Controller (MVC) architecture, and the view layer is accountable for handling mobile and web apps.It’s an open-source and component-based framework responsible for creating the application’s view layer. To build composable user interfaces predictably and efficiently using declarative code, we use React. React.js is a front-end JavaScript framework developed by Facebook. ReactJS Components, State, Props, and Keys.If you’re a novice or just looking to refresh your knowledge of ReactJS concepts, this Introduction to React JS article will give an introduction to all of the ReactJS fundamentals. There are many advantages of using this framework over other frameworks, and It’s ranking under the top 10 programming languages for the last few years under various language ranking indices. Today’s many large-scale companies (Netflix, Instagram, to name a few) also use React JS. React.js or ReactJS or React are different ways to represent ReactJS. React is a popular JavaScript library used for web development.

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