<template>
 <input type="text" placeholder="請輸入收貨人名字" v-model="consignee.name">
 <input type="text" placeholder="請輸入收貨地址" v-model="consignee.address">
 <input type="text" placeholder="請輸入收貨人手機號" v-model="consignee.mobile">
</template>
 
<script>
 data () {
  return {consignee: {}}
 },
 
 computed:{
  ...mapGetters([
   'orderDetailsData',
  ])
 },
 
 watch: {
  orderDetailsData: {
   handler: function (val, oldVal) {
    this.consignee.name = val.consignee; //收貨人名字
    this.consignee.address = val.address; //收貨人地址
    this.consignee.mobile = val.mobile; //收貨人電話
   },
   deep: true
  }
 }
 
<script>