TestEvent.webidl (272B)
1 interface EventTarget { 2 undefined addEventListener(); 3 }; 4 5 interface Event {}; 6 7 callback EventHandlerNonNull = any (Event event); 8 typedef EventHandlerNonNull? EventHandler; 9 10 [LegacyNoInterfaceObject] 11 interface TestEvent : EventTarget { 12 attribute EventHandler onfoo; 13 };