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What is React.js?

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React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript.
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My teaching experience 12 years

React.js is a popular JavaScript library developed by Facebook for building user interfaces, especially single-page applications where you need a fast, interactive user experience. It allows developers to create large web applications that can update and render efficiently in response to data changes....
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React.js is a popular JavaScript library developed by Facebook for building user interfaces, especially single-page applications where you need a fast, interactive user experience. It allows developers to create large web applications that can update and render efficiently in response to data changes. Key features of React.js include: 1. **Component-Based Architecture**: React encourages the development of UI components that manage their own state and can be composed to create complex UIs. 2. **Virtual DOM**: React uses a virtual DOM to optimize updates and rendering, ensuring high performance by minimizing the number of DOM manipulations. 3. **JSX Syntax**: React uses JSX, a syntax extension that allows mixing HTML with JavaScript, making it easier to write and understand component structures. 4. **Unidirectional Data Flow**: Data flows in one direction, making it easier to debug and understand how data changes affect the application. React.js is widely used in modern web development due to its efficiency, flexibility, and robust ecosystem. read less
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