#57 Intersection Observer API in JavaScript | JavaScript in Telugu

In this video, I explain the Intersection Observer API in JavaScript—an efficient way to detect visibility of elements in the viewport. Learn how to use it to implement features like lazy loading images, triggering animations, or infinite scrolling without using expensive scroll events. 📌 Topics Covered: What is Intersection Observer API? How it works under the hood Basic syntax & creating observers Real-world examples Perfect for performance optimization and building interactive UIs in modern web development.