vipAllDay/vue/vue高阶/comm/src/components/Demo5.vue

<template>
  <div class="demo">
    组件五：全局事件总线
    <button @click="getWeather">获取节气</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      aa: '夏至'
    }
  },
  methods:{
    getWeather() {
      this.$bus.$emit('part1',this.aa)
    }
  }
}
</script>

<style>

</style>