3 Mouse Events. 4.3.1 Interface MouseEvent.
This section supplements the DOM4 steps for intializing a new Event object with these optional modifier states. class MouseEvent. package js.html. extends UIEvent Event. extended by WheelEvent.new (typeArg:String, ?mouseEventInitDict:MouseEventInit). Mouse event types. We can split mouse events into two categories: simple and complex.If you know JS or HTML, then you can get everything from the page source though.