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Class CustomEvent
The CustomEvent interface is the recommended interface for application-specific event types.
Extends
Event
Members Table
The following table lists the members exposed by the CustomEvent object.
Show inherited members (marked with *)
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Property
Type
Readonly
Description
bubbles *
Boolean
true
Used to indicate whether or not an event is a bubbling event.
cancelable *
Boolean
true
Used to indicate whether or not an event can have its default action prevented.
currentTarget *
Node
true
Used to indicate the EventTarget whose EventListeners are currently being processed. This is particularly useful during capturing and bubbling.
defaultPrevented *
Boolean
true
Used to indicate whether preventDefault () has been called for this event.
detail
Object
false
Specifies some detail information about the Event.
eventPhase *
Number
true
Used to indicate which phase of event flow is currently being evaluated.
namespaceURI *
String
true
The namespace URI associated with this event at initialization time, or null if it is unspecified.
target *
Node
true
Used to indicate the EventTarget to which the event was originally dispatched.
timeStamp *
TimeStamp
true
Used to specify the time (in milliseconds relative to the epoch) at which the event was created.
type *
String
true
The name of the event (case-insensitive). The name must be an XML name.
Method
Returns
Description
initCustomEvent
Void
Initializes attributes of a CustomEvent object.
Sytaxis:
object.initCustomEvent( type , canBubble , cancelable , detail )
Arguments:
Name
Type
O/R
Description
type
String
Required
Specifies the event type.
canBubble
Boolean
Required
Specifies whether or not the event can bubble.
cancelable
Boolean
Required
Specifies whether or not the event's default action can be prevented.
detail
Object
Required
Specifies detail. This value may be null.
initEvent *
Void
The initEvent method is used to initialize the value of an Event created through the DocumentEvent interface.
Sytaxis:
object.initEvent( type , canBubble , cancelable )
Arguments:
Name
Type
O/R
Description
type
String
Required
Specifies the event type.
canBubble
Boolean
Required
Specifies whether or not the event can bubble.
cancelable
Boolean
Required
Specifies whether or not the event's default action can be prevented.
preventDefault *
Void
If an event is cancelable, the preventDefault method is used to signify that the event is to be canceled, meaning any default action normally taken by the implementation as a result of the event will not occur.
Sytaxis:
object.preventDefault( )
stopImmediatePropagation *
Void
Prevents other event listeners from being triggered and, unlike stopPropagation () its effect is immediate
Sytaxis:
object.stopImmediatePropagation( )
stopPropagation *
Void
The stopPropagation method is used prevent further propagation of an event during event flow. The event will complete dispatch to all listeners on the current EventTarget before event flow stops. This method may be used during any stage of event flow.
Sytaxis:
object.stopPropagation( )
Event
B
C
Interface
Description
Constant
Value
Description
Remarks
Events of that type are usually implemented in custom components.
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