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.
webkitmouseforceup event is fired by Safari at an
Element some time after the
webkitmouseforcedown event, when pressure on the button has been reduced sufficiently to end the "force click".
webkitmouseforceup is a proprietary, WebKit-specific event. It is part of the Force Touch events feature.
Not part of any specification. Apple has a description at the Mac Developer Library.
BCD tables only load in the browser