files/en-us/web/api/window/scrollmaxy/index.md
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The Window.scrollMaxY read-only property returns the
maximum number of pixels that the document can be scrolled vertically.
A number.
// Scroll to the bottom of the page
let maxY = window.scrollMaxY;
window.scrollTo(0, maxY);
Do not use this property to get the total document height, which is not equivalent to {{domxref("window.innerHeight")}} + window.scrollMaxY, because {{domxref("window.innerHeight")}} includes the width of any visible horizontal scrollbar, thus the result would exceed the total document height by the width of any visible horizontal scrollbar. Instead use {{domxref("element.scrollHeight","document.body.scrollHeight")}}. See also {{domxref("window.scrollMaxX")}} and {{domxref("window.scrollTo")}}.
This is not part of any specification.
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