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vue-ts-bus

v1.0.6

Published

vue eventBus vue-bus vue-ts-bus

Downloads

8

Readme

vue-ts-bus

:rocket: 使用者指南

通过npm下载安装代码

$ npm install --save vue-ts-bus
# or yarn
$ yarn add vue-ts-bus

如果你是node环境

var base = require('vue-ts-bus');

如果你是webpack等环境

import base from 'vue-ts-bus';

如果你是requirejs环境

requirejs(['node_modules/vue-ts-bus/dist/index.aio.js'], function (base) {
    // xxx
})

如果你是浏览器环境

<script src="node_modules/vue-ts-bus/dist/index.aio.js"></script>

这是一个 Vue 的插件,基于 Vue 实现的事件发布订阅中心

通过 mixin 注入 beforeDestroy 自动注销组件注册的事件

API

on

注册事件

on(eventName: string, callback: function, vueComponent?: vueComponent): void

| Parameter | Description | | --------------------------- | ------------------------------ | | eventName: string | 注册的事件名 | | callback: string | 回调事件 参数由 emit方法传入 | | vueComponent?: vueComponent | 组件实例 |

emit

触发事件

emit(eventName: string, ...args: any[]): void

| Parameter | Description | | ----------------- | ----------------------------------- | | eventName: string | 触发的事件名 | | args: any[] | on方法 回调函数 接受的参数 不定项 |

off

注销事件

off(eventName: string, callback?: function): boolean

| Parameter | Description | | ------------------- | -------------------- | | eventName: string | 触发的事件名 | | callback?: function | 只注销指定的回调函数 |

| Returns | Description | | ------- | --------------------- | | boolean | 是否注销成功 |

使用

初始化

import VueBus from 'vue-ts-bus'

// 1. 默认选项
// {
//   name: '$bus'
// }
Vue.use(VueBus)
// 在组件内使用
this.$bus.on('eventName', callback, this)

// 2. 自定义挂载到实例上的对象名
Vue.use(VueBus, { name: 'bus' })
// 在组件内使用
this.bus.on('eventName', callback, this)

全局使用

全局使用 订阅的事件 不会自动注销

// 代码
// 全局注册
const vm = new Vue(...)
vm.$bus.on('globalEventName', (...args) => console.log(args))

// 通过vue实例使用
vm.$bus.emit('globalEventName', 1,2,3) // [1,2,3]

// 组件内使用
// start: A Component
created() {
  this.$bus.emit('globalEventName', 1, 2) // [1,2]
},
methods: {
  handleClick() {
    this.$bus.emit('globalEventName', 1) // [1]
  }
},
// end: A Component

组件内使用

组件内使用 订阅的事件会自动在 组件 beforeDestroy 时注销

// start: A Component
created() {
  // 注册事件
  this.$bus.on('eventName', (...args) => console.log(args), this)
},
methods: {
  handleClick() {
    this.$bus.emit('eventName', 1) // [1]
  }
},
// end: A Component

// 在其他组件内触发事件
// start: B Component
created() {
  this.$bus.emit('eventName', 1, 2) // [1,2]
},
methods: {
  handleClick() {
    this.$bus.emit('eventName', 1, 2, 3) // [1,2,3]
  }
},
// end: B Component

同一个事件名注册多个事件

注册的事件会按注册先后顺序依次执行

// start: A Component
created() {
  // 注册事件
  this.$bus.on('eventName', (...args) => console.log('A1 ', args), this)
  this.$bus.on('eventName', (...args) => console.log('A2 ', args), this)

  setTimeout(() => {
    this.$bus.emit('eventName', 1, 2)
    // 会打印输出两次
    // A1 [1,2]
    // A2 [1,2]
  }, 1000)
},
// end: A Component

// 在其他组件内注册和触发事件
// start: B Component
created() {
  this.$bus.on('eventName', (...args) => console.log('B1 ', args), this)
  this.$bus.emit('eventName', 1, 2) // [1,2]
  
  setTimeout(() => {
    this.$bus.emit('eventName', 1, 2)
    // 如果算上在A组件里面注册的事件 会打印输出三次
    // A1 [1,2]
    // A2 [1,2]
    // B1 [1,2]
  }, 1000)
},
// end: B Component

注销事件

// start: A Component
created() {
  // 注册事件时传入了 vm实例this  在该组件beforeDestory的时候会自动注销
  this.$bus.on('autoDestory', (...args) => console.log(args), this)

  setTimeout(() => {
    this.$bus.emit('eventName', 1, 2)
    // 会打印输出两次
    // A1 [1,2]
    // A2 [1,2]
  }, 1000)
},
// end: A Component

// start: B Component
data() {
  return {
    fn: null
  }
},
created() {
  this.fn = (...args) => console.log(args)
  this.$bus.on('eventName', this.fn)
  
  setTimeout(() => {
    // 传入 句柄函数 移除指定的事件
    this.$bus.off('eventName', this.fn);
  }, 1000)

  setTimeout(() => {
    // 只传入事件名 移除该事件全部监听函数
    this.$bus.off('eventName');
  }, 5000)
},
// end: B Component

贡献者指南

首次运行需要先安装依赖

$ npm install

一键打包生成生产代码

$ npm run build

运行单元测试:

$ npm test