bool disabled

Source 

@DomName('HTMLMenuItemElement.disabled')
@DocsEditable()
@Experimental() // untriaged
bool get disabled => _blink.BlinkHTMLMenuItemElement.instance.disabled_Getter_(this);
void disabled=(bool value)

Source 

@DomName('HTMLMenuItemElement.disabled')
@DocsEditable()
@Experimental() // untriaged
set disabled(bool value) => _blink.BlinkHTMLMenuItemElement.instance.disabled_Setter_(this, value);