FileReader.addEventListener<K extends keyof FileReaderEventMap>(type: K,listener: (this: FileReader,ev: FileReaderEventMap[K],) => any,options?: boolean | AddEventListenerOptions,): void
K extends keyof FileReaderEventMap
type: K
listener: (this: FileReader,ev: FileReaderEventMap[K],) => any
optional
options: boolean | AddEventListenerOptions
FileReader.addEventListener(type: string,listener: EventListenerOrEventListenerObject,options?: boolean | AddEventListenerOptions,): void
listener: EventListenerOrEventListenerObject
optional
options: boolean | AddEventListenerOptions