Window: scrollMaxY property
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
TheWindow.scrollMaxY read-only property returns themaximum number of pixels that the document can be scrolled vertically.
Value
A number.
Examples
// Scroll to the bottom of the pagelet maxY = window.scrollMaxY;window.scrollTo(0, maxY);Notes
Do not use this property to get the total document height, which is not equivalent towindow.innerHeight + window.scrollMaxY, becausewindow.innerHeight includes the width of any visible horizontalscrollbar, thus the result would exceed the total document height by the width of anyvisible horizontal scrollbar. Instead usedocument.body.scrollHeight. See alsowindow.scrollMaxX andwindow.scrollTo.
Specifications
This is not part of any specification.