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/Dart 2

supportsProgressEvent property

bool supportsProgressEvent

Checks to see if the Progress event is supported on the current platform.

Implementation

static bool get supportsProgressEvent {
  var xhr = new HttpRequest();
  return JS('bool', '("onprogress" in #)', xhr);
}

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-html/HttpRequest/supportsProgressEvent.html