The EASIEST Way to Create a Javascript Scroll Spy with Intersection Observer API
Stop struggling with complex scroll event listeners and window.scrollY calculations! In this tutorial, I'll show you the modern, high-performance way to auto-highlight your active navigation links using the Intersection Observer API.
Old scroll spy methods hurt performance by firing events on every single pixel scroll. The Intersection Observer method is cleaner, faster, and requires zero scroll math. Perfect for your next portfolio, landing page, or documentation site.
In this video, we cover:
Why you should stop using scroll event listeners
Setting up the HTML & CSS for sticky navigation
Implementing the IntersectionObserver in JavaScript
Toggling the 'active' class automatically as you scroll
The EASIEST Way to Create a Javascript Scroll Spy with Intersection Observer API
#IntersectionObserver #JavaScript #WebDesign #FrontendDevelopment #ScrollSpy