Readonly bufferedReadonly idReadonly labelReadonly maxReadonly maxReadonly negotiatedReadonly orderedReadonly protocolReadonly readyOptional options: boolean | AddEventListenerOptionsOptional options: boolean | AddEventListenerOptionsOptional options: boolean | EventListenerOptionsOptional options: boolean | EventListenerOptions
Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.