父组件中的子标签
<son :parent="this" @comfirmParam="getFilterData" >子组件</son>
    data() {
        return {
            name:"黑波利"
        };
    },
    methods: {
        getFilterData(params) {
            console.log(params);
        },
    },
子组件中的代码
<button @click="click"><button>

<script>
export default {
    props: ["parent"],
    data() {
        return {
            params: { name: "小熊" },
        };
    },
    methods: {
        click() {
            this.$emit("comfirmParam", this.params);
            console.log(this.parent.name)
        },
    },
};
</script>