Keep the pointer inside the test area
Press, hold and release inside the area to see which buttons reach the browser. Wheel changes show direction and the event’s delta units. Double-click timing comes from the browser’s double-click event.
A worked example
A left-button press is button 0. A right-button press is button 2. The held list clears after release or when the page loses focus.
Before you use the result
Extra buttons may trigger browser navigation before this page receives them. Touch taps are not proof of mouse behavior. This page does not measure competitive click speed.