父组件从vuex获取数据给子组件传值延迟问题

  computed: {
    menuData() {
      let icons = ["el-icon-setting","fa fa-database","el-icon-coin"];
      //return this.$store.state.menuData;
      let arr = this.$store.state.menuData;
      for (let i = 0; i < arr.length; i++) {
        arr[i].icon = icons[i];
      }
      console.log(arr);
      return arr;
    } 
  }

<head-search :navMenus="menuData"></head-search>

  props: { navMenus: Array },
  data() {
    return {
      headMenus: [],
      headSearch: ""
    };
  },
  created() {   
    let tepArr = [];
    this.sortData(this.navMenus, tepArr);    
    this.headMenus = tepArr
  },

<head-search :navMenus="menuData" v-if="menuData.length"></head-search>