Interface TypedEventTarget<EventMap>

Adds types to the EventTarget class. Hopefully this won't be necessary forever.

https://github.com/microsoft/TypeScript/issues/28357 https://github.com/microsoft/TypeScript/issues/43477 https://github.com/microsoft/TypeScript/issues/299 etc

interface TypedEventTarget<EventMap> {
    addEventListener<K>(type, listener, options?): void;
    dispatchEvent(event): boolean;
    dispatchEvent(event): boolean;
    listenerCount(type): number;
    removeEventListener<K>(type, listener?, options?): void;
    removeEventListener(type, listener?, options?): void;
    safeDispatchEvent<Detail>(type, detail): boolean;
}

Type Parameters

  • EventMap extends Record<string, any>

Hierarchy (view full)

Implemented by

Methods

addEventListener dispatchEvent listenerCount removeEventListener safeDispatchEvent

Methods

addEventListener

dispatchEvent

  • dispatchEvent(event): boolean

  • 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.

    MDN Reference

    Parameters

    Returns boolean

  • dispatchEvent(event): boolean

  • 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.

    MDN Reference

    Parameters

    Returns boolean

listenerCount

removeEventListener

safeDispatchEvent

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