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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Summary
Returns the maximum number of pixels that the document can be scrolled vertically.
Syntax
ypix = window.scrollMaxY
ypixis the number of pixels.
Example
// Scroll to the bottom of the page var maxY = window.scrollMaxY; window.scrollTo(0,maxY);
Notes
Do not use this property to get the total document height, which is not equivalent to window.innerHeight + window.scrollMaxY, because 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 document.body.scrollHeight. See also window.scrollMaxX and window.scrollTo.
Specification
This is not part of any specification.