The MessagePort interface of the Channel Messaging API represents one of the two ports of a MessageChannel, allowing messages to be sent from one port and listening out for them arriving at the other.
{ readonly prototype: MessagePort; new (): never; }
The MessagePort interface of the Channel Messaging API represents one of the two ports of a MessageChannel, allowing messages to be sent from one port and listening out for them arriving at the other.
onmessage: ((this: MessagePort, ev: MessageEvent) => any) | null
onmessageerror: ((this: MessagePort, ev: MessageEvent) => any) | null
postMessage(message: any, transfer: Transferable[]): void
Posts a message through the channel. Objects listed in transfer are transferred, not just cloned, meaning that they are no longer usable on the sending side.
Throws a "DataCloneError" DOMException if transfer contains duplicate objects or port, or if message could not be cloned.
postMessage(message: any, options?: StructuredSerializeOptions): void
start(): void
Begins dispatching messages received on the port. This is implicitly called
when assigning a value to this.onmessage.
addEventListenerType Parameters
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K extends keyof MessagePortEventMap
(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void
addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void
removeEventListenerType Parameters
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K extends keyof MessagePortEventMap
(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void
removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void