EventHelper

EventHelper

new Cesium.EventHelper()
Core/EventHelper.js 30

A convenience object that simplifies the common pattern of attaching event listeners to several events, then removing all those listeners at once later, for example, in a destroy method.

Example:

var helper = new Cesium.EventHelper();

helper.add(someObject.event, listener1, this);
helper.add(otherObject.event, listener2, this);

// later...
helper.removeAll();

See:

Event

Methods

add(event, listener, scope) → EventHelper~RemoveCallback Core/EventHelper.js 45

Adds a listener to an event, and records the registration to be cleaned up later.

Name	Type	Description
`event`	Event	The event to attach to.
`listener`	function	The function to be executed when the event is raised.
`scope`	Object	optional An optional object scope to serve as the `this` pointer in which the listener function will execute.