onbeforeunload top-level property
dynamic Function(Event)?
get
onbeforeunload
Implementation
_i2.dynamic Function(_i3.Event)? get onbeforeunload =>
(_i3.Event p0) => _i4.callMethod(
_i4.getProperty(
_self,
'onbeforeunload',
),
r'call',
[
_self,
p0,
],
);