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Q And A

 1.  What is React  ? - React is a JavaScript library used for building user interfaces, particularly for single-page applications. It is maintained by Facebook and allows developers to create reusable UI components. React is highly efficient, scalable, and fast, thanks to its virtual DOM, which optimizes rendering. It is also robust, making it suitable for building large, dynamic web applications. 2.  What are the key features of React? - "React has several key features, including: Component-Based Architecture : React allows developers to build reusable UI components, making code more modular and maintainable. Virtual DOM : The virtual DOM is a lightweight copy of the actual DOM. It helps improve performance by minimizing direct changes to the actual DOM and only updating the parts of the UI that have changed. Unidirectional Data Flow : In React, data flows from parent components to child components via props , making it easier to understand the data flow and d...
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Core

  What is React? Define what React is and why it's used. Explain the benefits of using React for building web applications. What are the key features of React? Declarative UI, component-based architecture, unidirectional data flow, JSX, etc. What is JSX in React? What is JSX? Why do we use JSX instead of JavaScript to create UI elements? Explain how JSX is transformed into JavaScript. What is the Virtual DOM? What is the virtual DOM? How does React use the virtual DOM for efficient updates? Explain the difference between the virtual DOM and the real DOM. What are React components? Define components in React. Explain the difference between class components and functional components. What are props in React? Define props and their usage. How are props passed to components? Difference between props and state. What is the difference between state and props in React? Explain the difference between state and props with examples. Why can state be mutable but props cannot? What is React...
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