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.
Safari for macOS fires the non-standard
webkitmouseforcewillbegin event at an
Element before firing the initial
mousedown event. This offers the opportunity to tell the system not to trigger any default Force Touch actions if and when the click turns into a Force Touch event.
To instruct macOS not to engage any default Force Touch actions if the user apply enough pressure to activate a Force Touch event, call
preventDefault() on the
webkitmouseforcewillbegin event object.
webkitmouseforcewillbegin 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.
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