ReactJS is an open-source, component-based front end library responsible only for the view layer of the application. It is maintained by Facebook. React uses a declarative paradigm that makes it easier to reason about your application and aims to be both efficient and flexible.React JS is a javascript library originally developed by Facebook. It helps in building highly engaging single-page web applications. React JS helps in breaking down complex UI into simpler components. React JS has a high demand in the field of Web development.
