altKey property
The KeyboardEvent.altKey read-only property is a
boolean value that indicates if the alt key (Option
or ⌥ on macOS) was pressed (true) or not (false) when
the event occurred.
Implementation
external bool get altKey;The KeyboardEvent.altKey read-only property is a
boolean value that indicates if the alt key (Option
or ⌥ on macOS) was pressed (true) or not (false) when
the event occurred.
external bool get altKey;