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BeforeUnloadEvent object

Provides event properties that are specific to the onbeforeunload event.

HTML5 A vocabulary and associated APIs for HTML and XHTML, Section 5.5.10.1Internet Explorer 9

 

DOM Information

Inheritance Hierarchy

 Event
   BeforeUnloadEvent

Members

The BeforeUnloadEvent object has these types of members:

Methods

The BeforeUnloadEvent object has these methods.

MethodDescription
initEvent

Initializes a new generic event that the createEvent method created.

preventDefault

Cancels the default action of an event.

stopImmediatePropagation

Prevents any further propagation of an event.

stopPropagation

Prevents propagation of an event beyond the current target.

 

Properties

The BeforeUnloadEvent object has these properties.

PropertyDescription

bubbles

Gets a value that indicates whether an event propagates up from the event target.

cancelable

Gets a value that indicates whether you can cancel an event's default action.

cancelBubble

Gets or sets a value that indicates whether an event should be stopped from propagating up from the current target.

currentTarget

Gets the event target that is currently being processed.

defaultPrevented

Gets a value that indicates whether the default action should be canceled.

eventPhase

Gets the event phase that is being evaluated.

isTrusted

Gets a value that indicates whether a trusted event source created an event.

returnValue

Gets or sets a value that indicates whether to warn the user prior to navigating away from a page.

srcElement

Gets the element that the event was originally dispatched to. Compare to target.

target

Gets the element that is the target of the event.

timeStamp

Gets the time, in milliseconds, when an event occurred.

type

Gets the name of an event.

 

Standards information

See also

onbeforeunload

 

 

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