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Lead Software Developer Interview Questions and Answers

Updated 27 Sep 2024

Q1. what is the difference between react or javascript?

Ans.

React is a JavaScript library for building user interfaces, while JavaScript is a programming language used for web development.

  • React is a library used for building user interfaces, while JavaScript is a programming language used for web development.

  • React allows for the creation of reusable UI components, while JavaScript is used for adding interactivity to web pages.

  • React uses a virtual DOM for efficient rendering, while JavaScript directly manipulates the DOM.

  • React is often...read more

Q2. why is react is faster rather than is javscript?

Ans.

React is faster than plain JavaScript due to its virtual DOM and efficient rendering process.

  • React uses a virtual DOM to minimize actual DOM manipulation, resulting in faster updates.

  • React's reconciliation algorithm efficiently updates only the necessary components, improving performance.

  • React's one-way data flow and component-based architecture contribute to faster rendering compared to vanilla JavaScript.

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