on method

void on(
  1. String eventName,
  2. Function function
)

Sets a Dart function for the specified event.

Implementation

void on(String eventName, Function function) {
  if (eventHandlers[eventName] == null) {
    eventHandlers[eventName] = [function];
  } else {
    eventHandlers[eventName]!.add(function);
  }
}