Removes an event listener previously registered with addEventListener()
Symbol
WebSocket.removeEventListener
removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void
@param type
A case-sensitive string representing the event type to remove
@param listener
The function to remove from the event target
@param options
An options object that specifies characteristics about the event listener
removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void
Removes the event listener in target's event listener list with the same type, callback, and options.