Mastering React JS: Key Concepts and Best Practices Mastering React JS: Key Concepts and Best Practices React JS is a powerful JavaScript library for building user interfaces. Its features and capabilities make it a popular choice for developing efficient and scalable applications. In this guide, we’ll explore some of the key concepts in React JS, including the Virtual DOM, Hooks, Context, and more. 1. What is the Virtual DOM in React JS? The Virtual DOM is an abstraction of the real DOM (Document Object Model) in React. It acts as a lightweight copy of the real DOM, allowing React to efficiently update the UI when a component's state or props change. Here's how it works: When a component's state or props change, React creates a new Virtual DOM representation. React compares the new Virtual DOM with the previous one using a diffing algorithm. Only the necessary changes are applied to the ...
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