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.
Element.scrollTopMax read-only property returns a
Number representing the maximum top scroll offset possible for the
var pxl = elt.scrollTopMax;
This property is not part of any specification.
BCD tables only load in the browser
Element.scrollLeftMaxgiving the same information for the other axis.