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What is React.js?A programming languageA server-side frameworkA JavaScript library for building user interfacesA relational database management systemPrevious

Question

What is React.js?

  • A programming language
  • A server-side framework
  • A JavaScript library for building user interfaces
  • A relational database management system
    Previous
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Solution

Understanding React.js

React.js is not a programming language, a server-side framework, or a relational database management system. Instead, it is a JavaScript library for building user interfaces. Developed and maintained by Facebook, React allows developers to create large web applications that can change data, without reloading the page. Its primary feature is the ability to build reusable UI components, which promotes efficiency and structure in web development.

Key Features of React.js

  1. Component-Based Architecture: React allows developers to break down complex UIs into small, reusable components, making code more manageable.
  2. Virtual DOM: React uses a virtual representation of the DOM to optimize rendering and improve performance by updating only the parts of the UI that have changed.
  3. Unidirectional Data Flow: Data flows in one direction, which makes it easier to understand and debug applications.

Overall, React.js is an essential tool for modern web development, particularly for creating dynamic and responsive user interfaces.

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