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.
mozInnerScreenY property of the
Window interface returns the Y coordinate of the top-left corner of the window's viewport, in screen
Note: This coordinate is reported in CSS pixels, not in hardware pixels.
window.mozInnerScreenY property is a floating point, read-only value; it has no default value.
This feature is not part of any current specification. It is not on track to become a standard.
BCD tables only load in the browser