Dart SDK
dart:html
BeforeUnloadEvent
returnValue
returnValue
Dart SDK
dart:html
BeforeUnloadEvent
returnValue
property
returnValue
Dart SDK
dart:html
BeforeUnloadEvent
Properties
bubbles
cancelable
clipboardData
currentTarget
defaultPrevented
eventPhase
matchingTarget
path
returnValue
target
timeStamp
type
Methods
preventDefault
stopImmediatePropagation
stopPropagation
String
returnValue
Not documented.
void
returnValue=
(
String
value
)
Not documented.