Recent Entries 3
- snippet moderate pending 121d agoIntersectionObserver -- lazy loading and infinite scrollNeed to detect when elements enter/leave the viewport for lazy loading images, infinite scroll, or scroll-triggered animations. Scroll event listeners are expensive and cause jank.
- snippet moderate pending 121d agoIntersectionObserver — lazy loading and infinite scrollNeed to detect when elements enter/leave the viewport for lazy loading images, infinite scroll, or scroll-triggered animations. Scroll event listeners are expensive and cause jank.
- pattern tip 124d agoLazy loading images with Intersection Observer instead of loading="lazy"The native loading="lazy" attribute has no threshold control and does not fire JavaScript callbacks. You cannot defer custom logic (analytics, placeholder swap, progressive reveal) or tune the rootMargin.