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.
Obsolete since Gecko 72 (Firefox 72 / Thunderbird 72 / SeaMonkey 2.69)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Returns the number of times the current document has been painted to the screen in this window.
var paintCount = window.mozPaintCount;
window.mozPaintCountvalue is a
long long, and starts at zero when the document is first created, incrementing by one each time the document is painted.
Not part of any W3C technical specification or recommendation.
BCD tables only load in the browser