The nonstandard way to access the element that the mouse comes from in the case of a mouseover event.
This member is deprecated and not cross-browser compatible; use relatedTarget to get the same information in the standard way.
final Node fromElement
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-html/MouseEvent/fromElement.html