3 ms·
That's called "viewability" and isn't related to relevance. It's already solved natively with the IntersectionObserver API which came out years ago and supports
by manigandham 7y ago
That's called "viewability" and isn't related to relevance. It's already solved natively with the IntersectionObserver API which came out years ago and supports more than just an image. [1]
Lazy loading is entirely different and offers nothing new or useful for ads.
1. https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API https://developer.mozilla.org/en-US/docs/Web/API/Intersectio...
- Kwantuum 7y agoAs the first reply in this chain remarks: this is not available without Javascript.
- manigandham 7y agoThe point is that native lazy-loading is not useful for ad tracking. If there's JS then there are other methods to check viewability. If there's no JS then there are no ads at all.