onProgress property

Stream<ProgressEvent> onProgress
@DocsEditable(), @DomName('XMLHttpRequestEventTarget.onprogress'), @Experimental(), @SupportedBrowser(SupportedBrowser.CHROME), @SupportedBrowser(SupportedBrowser.FIREFOX), @SupportedBrowser(SupportedBrowser.IE, '10'), @SupportedBrowser(SupportedBrowser.SAFARI)

Stream of progress events handled by this HttpRequestEventTarget.

Implementation 

@DomName('XMLHttpRequestEventTarget.onprogress')
@DocsEditable()
@SupportedBrowser(SupportedBrowser.CHROME)
@SupportedBrowser(SupportedBrowser.FIREFOX)
@SupportedBrowser(SupportedBrowser.IE, '10')
@SupportedBrowser(SupportedBrowser.SAFARI)
@Experimental() // untriaged
Stream<ProgressEvent> get onProgress => progressEvent.forTarget(this);