onunload top-level property

dynamic Function(Event)? get onunload

MDN Reference

Implementation

_i2.dynamic Function(_i3.Event)? get onunload =>
    (_i3.Event p0) => _i4.callMethod(
          _i4.getProperty(
            _self,
            'onunload',
          ),
          r'call',
          [
            _self,
            p0,
          ],
        );