dart:html
onOffline property Stream<Event> onOffline   Source  @DomName('WindowEventHandlers.onoffline')
@DocsEditable()
@Experimental() // untriaged
Stream<Event> get onOffline => offlineEvent.forTarget(this);

    
{'path': 'public/docs/dart~1/dart-html/windoweventhandlers/onoffline.html', 'source': 'DevDocs.IO'}