Class: Target

ol/events/Target~Target


A simplified implementation of the W3C DOM Level 2 EventTarget interface. See https://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-EventTarget.

There are two important simplifications compared to the specification:

  1. The handling of useCapture in addEventListener and removeEventListener. There is no real capture model.
  2. The handling of stopPropagation and preventDefault on dispatchEvent. There is no event target hierarchy. When a listener calls stopPropagation or preventDefault on an event object, it means that no more listeners after this one will be called. Same as when the listener returns false.

Subclasses

Extends

Methods

dispatchEvent(event){boolean|undefined}

events/Target.js, line 82

Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

Name Type Description
event Object | module:ol/events/Event~Event | string

Event object.
Returns:
false if anyone called preventDefault on the event object or if any of the listeners returned false.