Hide sidebar ads when footer is visible on scroll

Implement IntersectionObserver to dynamically hide and show sidebar ads based on footer visibility, preventing overlap.

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This commit is contained in:
sebastjanartic 2026-03-06 15:14:37 +00:00
parent 78049cc867
commit 9db1b3c6a2
2 changed files with 23 additions and 2 deletions

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@ -124,9 +124,26 @@ export function MultiplexAd() {
export function PageSideAds({ contentHalfWidth = 640 }: { contentHalfWidth?: number }) {
const gap = 10;
const offset = contentHalfWidth + gap;
const [footerVisible, setFooterVisible] = useState(false);
useEffect(() => {
const footer = document.querySelector("footer");
if (!footer) return;
const observer = new IntersectionObserver(
([entry]) => setFooterVisible(entry.isIntersecting),
{ threshold: 0 }
);
observer.observe(footer);
return () => observer.disconnect();
}, []);
return (
<div className="relative">
<div className="hidden 2xl:flex fixed top-0 bottom-0 w-[160px] z-10 items-center justify-center pointer-events-none" style={{ left: `calc(50% - ${offset}px - 160px)` }} data-testid="ad-left-sidebar">
<div
className="hidden 2xl:flex fixed top-0 bottom-0 w-[160px] z-10 items-center justify-center pointer-events-none transition-opacity duration-300"
style={{ left: `calc(50% - ${offset}px - 160px)`, opacity: footerVisible ? 0 : 1 }}
data-testid="ad-left-sidebar"
>
<div className="pointer-events-auto">
<AdSense
slot="2398082838"
@ -135,7 +152,11 @@ export function PageSideAds({ contentHalfWidth = 640 }: { contentHalfWidth?: num
/>
</div>
</div>
<div className="hidden 2xl:flex fixed top-0 bottom-0 w-[160px] z-10 items-center justify-center pointer-events-none" style={{ right: `calc(50% - ${offset}px - 160px)` }} data-testid="ad-right-sidebar">
<div
className="hidden 2xl:flex fixed top-0 bottom-0 w-[160px] z-10 items-center justify-center pointer-events-none transition-opacity duration-300"
style={{ right: `calc(50% - ${offset}px - 160px)`, opacity: footerVisible ? 0 : 1 }}
data-testid="ad-right-sidebar"
>
<div className="pointer-events-auto">
<AdSense
slot="2398082838"