onLoadStart property
Stream<ProgressEvent> onLoadStartStream of loadstart
events handled by this FileReader.
Source
@DomName('FileReader.onloadstart') @DocsEditable() Stream<ProgressEvent> get onLoadStart => loadStartEvent.forTarget(this);
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-html/FileReader/onLoadStart.html