addEventListener

Registers an event listener in the global scope, which will be called synchronously whenever the event type is dispatched.

addEventListener('unload', () => { console.log('All finished!'); });
...
dispatchEvent(new Event('unload'));
function addEventListener<K extends keyof WindowEventMap>(
type: K,
listener: (this: Window, ev: WindowEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
function addEventListener(
type: string,
options?: boolean | AddEventListenerOptions,
): void;
§
addEventListener<K extends keyof WindowEventMap>(type: K, listener: (this: Window, ev: WindowEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void
[src]

Registers an event listener in the global scope, which will be called synchronously whenever the event type is dispatched.

addEventListener('unload', () => { console.log('All finished!'); });
...
dispatchEvent(new Event('unload'));

§Type Parameters

§
K extends keyof WindowEventMap
[src]

§Parameters

§
type: K
[src]
§
listener: (this: Window, ev: WindowEventMap[K]) => any
[src]
§
options?: boolean | AddEventListenerOptions optional
[src]

§Return Type

§
addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void
[src]

§Parameters

§
type: string
[src]
§
options?: boolean | AddEventListenerOptions optional
[src]

§Return Type