核心方法

$emit和$on

Component One

<script>
  import Bus from 'Bus'
  export default {
    methods: {
      listen () {
        Bus.$on('event-name', function (data) {
          // 处理数据
        })
      }
    }
  }
</script>

Component Two

<script>
  import Bus from 'Bus'
  export default {
    data () {
      return {
        data
      }
    },
    methods: {
      send() {
        // 发送数据
        Bus.$emit('event-name', data)
      }
    }
  }
</script>

Bus

import Vue from 'vue'

const bus = new Vue()

export default bus