Gets the X coordinate of the top-left corner of the window's viewport, in screen coordinates.
Note: This coordinate is reported in CSS pixels, not in hardware pixels. That means it can be affected by the zoom level; to compute the actual number of physical screen pixels, you should use the
screenX = window.mozInnerScreenX;
- screenX stores the
window.mozInnerScreenXproperty is a floating point, read-only value; it has no default value.
Not part of any W3C technical specification or recommendation.