onMark property
Stream of mark events handled by this SpeechSynthesisUtterance.
Implementation
Stream<SpeechSynthesisEvent> get onMark => markEvent.forTarget(this);© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-html/SpeechSynthesisUtterance/onMark.html