react 中 EventEmitter 事件总线机制

此机制可用于 react 中兄弟组件中的通信

npm install events -S

事件总线：

// eventBus.js

import {EventEmitter} from 'events';
export default new EventEmitter();

监听：

import Bus from './eventBus'

Bus.addListener('changeSiblingsData', (msg) => {
  this.setState({
    bus: msg,
  });
  console.log(msg);
});

触发：

import Bus from './eventBus'

Bus.emit('changeSiblingsData', msg);