vue 这写法有问题么 我写在mounted,将下面的json数据，替换detailData 现在在vscode生效 ideal里未生效，完全不知道怎么回事

 <div class="tab-container" v-if="detailData[tabIndex].list.length > 0">
                    <div v-for="(item,index) in detailData[tabIndex].list">
                        <div class="shop-item" @click="goMerchantDetail(item.classifyName,item.id)">
                            <div class="shop-item-left"> </div>
                       </div>
                    </div>
 </div>

 that.detailData=[
          {
            "msg": "success",
            "code": 200,
            "pages": 22,
            "hasNextPage": true,
            "list": [
              {
                "id": "06B7734F25454581BAB4F2D7C5BF62A7",
                "merchantId": "8A1CAFB16854494A8045ABCC20D10826",
                "isManager": "0",
                "merchantNo": "103310054510033",
                "status": "1",
                "storeImage": "attached/image/20210918/888832152213729280.jpg",
                "storeAddr": "沪南公路3449弄万达广场B门109铺",
                "storeName": "周浦万达789店",
                "storeBeginTime": "00:00",
                "storeEndTime": "00:00",
                "firstClassifyId": "A0",
                "classifyName": "美食",
                "couponPages": {
                  "lastPage": 0,
                  "navigatepageNums": [],
                  "startRow": 0,
                  "hasNextPage": false,
                  "prePage": 0,
                  "nextPage": 0,
                  "endRow": 0,
                  "pageSize": 10,
                  "list": [],
                  "pageNum": 0,
                  "navigatePages": 8,
                  "navigateFirstPage": 0,
                  "total": 0,
                  "pages": 0,
                  "firstPage": 0,
                  "size": 0,
                  "isLastPage": true,
                  "hasPreviousPage": false,
                  "navigateLastPage": 0,
                  "isFirstPage": false
                },
                "bFold": true,
                "couponList": []
              },
              
              
            ]
          }
        ]

tabIndex是个啥

打印下数据有改变吗