vue 子组件调用父组件方法

<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});
},
}
}