在VueJS中从全局事件总线访问事件对象

// main.js
import Vue from 'vue'

Vue.prototype.$bus = new Vue()

// ComponentA.vue
export default {
  methods: {
    handleClick() {
      this.$bus.$emit('custom-event', { data: 'Hello from Component A' })
    }
  }
}

// ComponentB.vue
export default {
  created() {
    this.$bus.$on('custom-event', this.handleEvent)
  },
  methods: {
    handleEvent(data) {
      console.log(data) // { data: 'Hello from Component A' }
    }
  }
}