eventtarget-sketch.idl

callback EventCallback = void (Event event);
dictionary EventOptions {
  DOMString filter;             // selector (only useful if target is an element)
  boolean capture = false;      // (!capture && !bubble) target
  boolean bubble;               // (capture && !bubble) capture + target
                                // (capture && bubble) capture + target + bubble
  boolean ignoreBubbles = true; // ignore bubbles attribute
}

partial interface EventTarget {
  Function on((DOMString or sequence<DOMString>) types, EventCallback callback, optional EventOptions options);
  Function on(dictionary<EventCallback> typesAndCallbacks, optional EventOptions options);
}