Vue2.0 实现单选互斥的方法

<template>   <dd @click="changeCategory(currCourseFirst.categoryId)"         v-for="currCourseFirst in currCourse.currCourseFirst"         :key="currCourseFirst.categoryId"         :class="resultCategoryId === currCourseFirst.categoryId ? 'active': ''" >          {{currCourseFirst.name}}  </dd></template><script>  export default{    data() {      return {        categeryId: this.$route.query.categoryId,        typeId: this.$route.query.typeId      }    },    methods: {      changeCategoryId(categoryId) {        this.categoryId = categoryId      }    },    computed: {      resultCategoryId(){        return this.categoryId      }    }  }</script>