Static factory designed to expose readystatechange
events to event handlers that are not necessarily instances of HttpRequest.
See EventStreamProvider for usage information.
static const EventStreamProvider<Event> readyStateChangeEvent = const EventStreamProvider<Event>('readystatechange')
© 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/readyStateChangeEvent-constant.html