Event

The Event interface represents any event of the DOM. It contains common properties and methods to any event.

A lot of other interfaces inherits, directly or not, from this base interface:

Constructor

This interface doesn't inherit any property.

Event.bubbles Read only: A boolean indicating whether the event bubbles up through the DOM or not.
Event.cancelable Read only: A boolean indicating whether the event is cancelable.
Event.currentTarget Read only: A reference to the currently registered target for the event.
Event.defaultPrevented Read only: Indicates whether or not event.preventDefault() has been called on the event.
Event.eventPhase Read only: Indicates which phase of the event flow is being processed.
Event.explicitOriginalTarget Read only: The explicit original target of the event (Mozilla-specific).
Event.originalTarget Read only: The original target of the event, before any retargetings (Mozilla-specific).
Event.target Read only: A reference to the target to which the event was originally dispatched.
Event.timeStamp Read only: The time that the event was created.
Event.type Read only: The name of the event (case-insensitive).
Event.isTrusted Read only: Indicates whether or not the event was initiated by the browser (after a user click for instance) or by a script (using an event creation method, like event.initEvent)

This interface doesn't inherit any method.

Event.initEvent(): Initializes the value of an Event created. If the event has already being dispatched, this method does nothing.
Event.preventBubble() Obsolete since Gecko 24: Prevents the event from bubbling. Obsolete, use event.stopPropagation instead.
Event.preventCapture() Obsolete since Gecko 24: Obsolete, use event.stopPropagation instead.
Event.preventDefault(): Cancels the event (if it is cancelable).
Event.stopImmediatePropagation(): For this particular event, no other listener will be called. Neither those attached on the same element, nor those attached on elements which will be traversed later (in capture phase, for instance)
Event.stopPropagation(): Stops the propagation of events further along in the DOM.
Event.getPreventDefault(): ?