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What is React JS?
ReactJS (or simply React) is an open-source JavaScript library that allows you to create user interfaces (UI) for web applications. It was developed by Facebook and is now maintained by a community of developers.
Why React JS?
React works by allowing you to create reusable UI components that can be combined to form more complex interfaces. Each component represents a specific part of the UI and contains its own set of properties and methods. When a user interacts with a component, React updates only that specific component instead of reloading the entire page, which makes React very fast and efficient.
One of the key features of React is its use of a virtual DOM (Document Object Model), which is a lightweight representation of the actual DOM. This allows React to efficiently update only the necessary parts of the UI when a change occurs, without the need to reload the entire page.
React is widely used for building single-page applications (SPA) and is often used in combination with other JavaScript libraries and frameworks such as Redux, React Router, and Axios. React has gained popularity due to its flexibility, high performance, and large community support.
