vue bus总线传值

eventBus.js： 

import Vue from 'vue';

var eventBus = new Vue({});

export default eventBus;

main.js：

// 引入bus总线传值
import eventBus from './eventBus';
Vue.prototype.$bus = eventBus;

ShuGuoDetail.vue：

      
        

      
      ...
      afterEnter() {
        this.isShow = false;
        this.$bus.$emit('sendPickNum', this.num);
      },

App.vue：

  created() {
    this.$bus.$on('sendPickNum', (data)=> {
      this.pickNum += data;
    });
  },