свойство message

String message

Источник

@DomName('ErrorEvent.message')
@DocsEditable()
String get message => _blink.BlinkErrorEvent.instance.message_Getter_(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/ErrorEvent/message.html