Class EventDispatcher

支持事件处理和自定义数据

Hierarchy (view full)

EventDispatcher

Index

Constructors

Properties

Methods

addEventListener hasEventListener removeEventListener dispatchEvent setCustomData getCustomData

Constructors

`Protected`constructor

new EventDispatcher(): EventDispatcher
Returns EventDispatcher

Properties

`Protected`_listeners

_listeners: {} = {}

Methods

addEventListener

addEventListener(type, listener): void
添加事件监听机器
Parameters
- type: string
- listener: any
Returns void

hasEventListener

hasEventListener(type, listener): boolean
Parameters
- type: string
- listener: any
Returns boolean

removeEventListener

removeEventListener(type, listener): void
移除事件监听器
Parameters
- type: string
- listener: any
Returns void

`Protected`dispatchEvent

dispatchEvent(event): void
Protected
触发事件。
Parameters
- event: any
  event.type event.target 如果未指定，自动设置为当前对象
Returns void

setCustomData

setCustomData(key, value): void
指定自定义数据
Parameters
- key: string
- value: any
Returns void

getCustomData

getCustomData(key): any
获取某个自定义数据
Parameters
- key: string
Returns any