closed property

bool? closed

Indicates whether this window has been closed.

print(window.closed); // 'false'
window.close();
print(window.closed); // 'true'

MDN does not have compatibility info on this attribute, and therefore is marked nullable.

Implementation

bool? get closed;

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.13.0/dart-html/WindowBase/closed.html