Class: EventEmitter<EventsMap>

事件中心（实现的发布订阅者模式）

简单使用：

const e = new EventEmitter();

const handler = (data) => {
  console.log(data);
};

e.on('eventName', handler);

e.emit('eventName', { data: 'data' });

// 取消订阅
e.off('eventName', handler);

// 清除所有的订阅者
e.clear();

Type parameters

Name	Type
EventsMap	extends Record<string, any> = Event

Table of contents

Constructors

• constructor

Methods

• on
• once
• off
• emit
• has
• clear

Constructors

constructor

• new EventEmitter<EventsMap>(«destructured»?): EventEmitter<EventsMap>

Type parameters

Name	Type
EventsMap	extends Record<string, any> = Event

Parameters

Name	Type
«destructured»	IOptions

Returns

EventEmitter<EventsMap>

Defined in

src/core/Event.ts:49

Methods

on

▸ on(type, handler, context?): EventEmitter<EventsMap>

添加订阅者

Parameters

Name	Type	Description
type	any	事件类型
handler	any	回调函数
context?	any	上下文

Returns

EventEmitter<EventsMap>

Defined in

src/core/Event.ts:82

---

once

▸ once(type, handler, context?): EventEmitter<EventsMap>

添加一次性订阅者

Parameters

Name	Type
type	any
handler	any
context?	any

Returns

EventEmitter<EventsMap>

Defined in

src/core/Event.ts:106

---

off

▸ off(type, handler?, context?): EventEmitter<EventsMap>

取消监听

Parameters

Name	Type
type	any
handler?	any
context?	any

Returns

EventEmitter<EventsMap>

Defined in

src/core/Event.ts:130

---

emit

▸ emit(type, args?): any

触发事件

Parameters

Name	Type
type	any
args?	any

Returns

any

Defined in

src/core/Event.ts:158

---

has

▸ has(type): any

Parameters

Name	Type
type	any

Returns

any

Defined in

src/core/Event.ts:167

---

clear

▸ clear(): EventEmitter<EventsMap>

清空所有的订阅者

Returns

EventEmitter<EventsMap>

Defined in

src/core/Event.ts:174