VisualViewport: pageTop property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨August 2021⁩.

The pageTop read-only property of the VisualViewport interface returns the y coordinate of the top edge of the visual viewport relative to the initial containing block origin, in CSS pixels, or 0 if current document is not fully active.