What is React Js?
<p>React.js is a JavaScript library for building user interfaces, particularly for single-page applications where the user interface needs to be highly dynamic and responsive.</p>
<p>React allows developers to create reusable UI components and manage the state of these components efficiently. One of the key features of React is its use of a virtual DOM (Document Object Model), which is an in-memory representation of the actual DOM elements. This virtual DOM allows React to update only the parts of the actual DOM that have changed, making the rendering process more efficient and improving the application’s performance.</p>
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