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@deot/helper-emitter

v1.1.3

Published

### `Emitter` ```js import { Emitter } from '@deot/helper-emitter';

Downloads

1

Readme

@deot/helper-emitter

Emitter

import { Emitter } from '@deot/helper-emitter';

// or
import { Emitter } from '@deot/helper';

示例

let source = new Emitter({ a: 2 });

// 订阅事件 ,不使用'() => {}', 使用'function() {}'可以拿到当前对象,进行链式操作
source.on('[event-name]', ({ name }) => {
	console.log(name, this);
});

// 订阅listener
source.on(({ name }) => {
	console.log(name, this);
});

// 发布事件,第一个值事件,第二个值参数
source.emit('[event-name]', { name: 'wya-ps' }); 

// 取消事件订阅
source.off('[event-name]');

// 取消订阅listener
source.off();

API


on

source.on(eventName: string, callback: Function)

订阅事件

  • eventName: 绑定的事件名。
  • callback: 回调。

示例

source.on('[event-name]', ({ name }) => {
	console.log(name, this);
});

once

source.once(eventName: string, callback: Function)

一次订阅

  • eventName: 绑定的事件名。
  • callback: 回调。

示例

source.once('[event-name]', ({ name }) => {
	console.log(name, this);
});

off

source.off(eventName: string, callback: Function)

取消订阅

  • eventName: 绑定的事件名。
  • callback: 回调。

示例

// 取消事件订阅, 指定回调
source.off('[event-name]', fn);

// 取消事件订阅
source.off('[event-name]');

// 取消订阅listener
source.off();

emit

source.emit(eventName: string, params: Object)

发布事件

  • eventName: 触发事件名。
  • params: 给回调的参数。

示例

// 发布事件,第一个值事件,第二个值参数
source.emit('[event-name]', { name: 'wya-ps' }); 

listener

source.on(callback: Function)

监听

  • params: 监听器的回调。

示例

// 订阅listener
source.on(({ name }) => {
	console.log(name, this);
});

// 取消订阅listener
source.off();