Optional eventInitDict: WheelEventInitReadonly AT_Readonly BUBBLING_Readonly CAPTURING_Readonly DOM_Readonly DOM_Readonly DOM_Readonly NONEReadonly altReadonly bubblesReturns true or false depending on how event was initialized. True if event goes through its target's ancestors in reverse tree order, and false otherwise.
Readonly buttonReadonly buttonsReadonly cancelableReturns true or false depending on how event was initialized. Its return value does not always carry meaning, but true can indicate that part of the operation during which event was dispatched, can be canceled by invoking the preventDefault() method.
Readonly clientXReadonly clientYReadonly composedReturns true or false depending on how event was initialized. True if event invokes listeners past a ShadowRoot node that is the root of its target, and false otherwise.
Readonly ctrlReadonly currentReturns the object whose event listener's callback is currently being invoked.
Readonly defaultReturns true if preventDefault() was invoked successfully to indicate cancelation, and false otherwise.
Readonly deltaReadonly deltaXReadonly deltaYReadonly deltaZReadonly detailReadonly eventReturns the event's phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET, and BUBBLING_PHASE.
Readonly isReturns true if event was dispatched by the user agent, and false otherwise.
Readonly layerXReadonly layerYReadonly metaReadonly movementXReadonly movementYReadonly offsetXReadonly offsetYReadonly pageXReadonly pageYReadonly relatedReadonly screenXReadonly screenYReadonly shiftReadonly srcReadonly targetReturns the object to which event is dispatched (its target).
Readonly timeReturns the event's timestamp as the number of milliseconds measured relative to the time origin.
Readonly typeReturns the type of event, e.g. "click", "hashchange", or "submit".
Readonly viewReadonly whichReadonly xReadonly yStatic Readonly DOM_Static Readonly DOM_Static Readonly DOM_
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