W3cubDocs

/Dart 2

deltaY property

num deltaY

The amount that is expected to scroll vertically, in units determined by deltaMode.

See also:

Implementation

num get deltaY {
  if (JS('bool', '#.deltaY !== undefined', this)) {
    // W3C WheelEvent
    return this._deltaY;
  }
  throw new UnsupportedError('deltaY is not supported');
}

© 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/WheelEvent/deltaY.html