menu
Dart
dart:html
BeforeUnloadEvent
returnValue property
returnValue
brightness_4
brightness_5
description
returnValue
property
String
?
returnValue
Implementation
String? get returnValue native;
void
returnValue=
(
String
?
value
)
Implementation
set returnValue(String? value) native;
Dart
dart:html
BeforeUnloadEvent
returnValue property
BeforeUnloadEvent class
Properties
bubbles
cancelable
composed
currentTarget
defaultPrevented
eventPhase
hashCode
isTrusted
matchingTarget
path
returnValue
runtimeType
target
timeStamp
type
Methods
composedPath
noSuchMethod
preventDefault
stopImmediatePropagation
stopPropagation
toString
Operators
operator ==