@jtopo/core / EventTarget

Class: EventTarget

事件对象, 可以监听和分发事件

Hierarchy

• EventTarget

  ↳ Stage

  ↳ InputSystem

  ↳ SelectedGroup

  ↳ Keyboard

  ↳ Camera

Table of contents

Constructors

• constructor

Methods

• addEventListener
• dispatchEvent
• hasListener
• removeEventListener

Constructors

constructor

new EventTarget()

Methods

addEventListener

addEventListener(type, callback): void

增加事件监听

Parameters

Name	Type	Description
type	string	事件类型
callback	Function

Returns

void

---

dispatchEvent

dispatchEvent(event): void

分发事件

Parameters

Name	Type
event	Event | EventBase

Returns

void

---

hasListener

hasListener(type): boolean

是否有该类型的监听

Parameters

Name	Type
type	string

Returns

boolean

---

removeEventListener

removeEventListener(type, callback): any

移除一个事件监听

Parameters

Name	Type
type	string
callback	Function

Returns

any