React Intersection Observer API: Lazy Loading, Animations & More (GenZ JavaScript Series) 2025

Описание: Hey GenZ developers! Welcome back to the **GenZ JavaScript Series**!

Today, we're diving deep into a powerful browser API that every modern developer should know: the **Intersection Observer API**. This API lets you efficiently detect when an element enters or exits the viewport, opening up a world of possibilities for performance and user experience.

In this video, we'll explain the core concepts of the Intersection Observer API and then build a practical *ReactJS demo project* to see it in action. You'll learn how to implement:

*Lazy Loading:* Only load images or components when they become visible.
*Infinite Scrolling:* Load more content as the user scrolls to the bottom.
*Animated Effects:* Trigger animations when elements scroll into view.
*Tracking Element Visibility:* Know when an advertisement or an analytics event is truly "seen" by a user.

We'll demonstrate how to integrate the Intersection Observer with *React Hooks* to make your applications more performant and engaging.

Don't miss out on mastering this essential API! Like, share, and subscribe to the *GenZ JavaScript Series* for more React, Angular, and vanilla JS tutorials.

*💻 Code & Resources:*
[LINK: https://codesandbox.io/p/devbox/inter... ]


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