vue子组件如何调用父组件中的方法

子组件：调用closeWendu方法

methods: {
  closeTasks() {
    console.log("关闭舞动窗体");
    // this.$parent.event.closeTasks();
    this.$bus.$emit('closeWendu');
  }
}

父组件：接收到子组件传来的消息，执行closeWendu方法

import OnlineWudong from './onlineWudong.vue';
import OnlineWendu from './onlineWendu.vue';
import OnlineWeiqixiang from './onlineWeiqixiang.vue';
import OnlineBileiqi from './onlineBileiqi.vue';
import OnlineQingxie from './onlineQingxie.vue';

// import AirRoad from './onlineWendu.vue'
export default {
  name: "Index",
  components: {
    OnlineWudong,
    OnlineWendu,
    OnlineWeiqixiang,
    OnlineBileiqi,
    OnlineQingxie
  },
}

mounted() {
  var that = this;

  that.$bus.$on("closeWudong", () => {
    that.isShowAnalysisResult=false;
  });
  that.$bus.$on("closeWendu", () => {
    that.isShowWendu=false;
  });
  that.$bus.$on("closeWeiqixiang", () => {
    that.isShowWeiqixiang=false;
  });
  that.$bus.$on("closeBileiqi", () => {
    that.isShowBileiqi=false;
  });
  that.$bus.$on("closeQingxie", () => {
    that.isShowQingxie=false;
  });
  that.initMonitorBillboard();
},