vue 子组件调用父组件方法传参,父组件调用也传参_面试题vue组件封装思路

<privateScoreTop :msg ="Widget" v-on:listenTochildEvent="showMessageFromChild">
</privateScoreTop>

export default{
    data(){
        return {
        }
    },
    computed:{
      privateScoreTop : ()=>import("./privateScoreTop.vue")  
    },
    mounted(){
    },
    methods:{
      showMessageFromChild(data){
         console.log("回掉子组件成功"+data);
     }  
    }
}

export default{ methods: { onfilter(){ this.$emit("listenTochildEvent",{回传参数}); },
    }
}