on method

dynamic Function() on(
  1. String event,
  2. EventHandler handler
)
inherited

This function binds the handler as a listener to the event

Implementation

Function() on(String event, EventHandler handler) {
  this._events.putIfAbsent(event, () => <EventHandler>[]);
  this._events[event]!.add(handler);
  return () => off(event, handler);
}