A reference to the parent of this window.
If this WindowBase has no parent, parent will return a reference to
the WindowBase itself.
IFrameElement myIFrame = new IFrameElement();
window.document.body.elements.add(myIFrame);
print(myIframe.contentWindow.parent == window) // 'true'
print(window.parent == window) // 'true'
Source
@DomName('Window.parent')
@DocsEditable()
WindowBase get parent => _convertNativeToDart_Window(
_blink.BlinkWindow.instance.parent_Getter_(this));