React.js is significant in 2025 due to factors like fast performance using a virtual DOM and a declarative syntax.
It boasts a large ecosystem with numerous libraries and frameworks built around React, along with massive community support.
React is versatile, being used for various applications including admin panels, e-commerce websites, mobile apps (via React Native), and desktop apps (utilizing Electron + React).
It provides flexibility in tool selection, is beginner-friendly with abundant tutorials, and covers topics like building forms, connecting to APIs, and deployment best practices.