Vue.js 如何为v模型数据对象指定默认值

这里我想为

sendqnt

和

receiveqnt

    export default{
    data: function(){

        return{

     businessforCustomer:false,
    transactionData:{
       business:{},
       senditems:{
         sendqnt:0,
       },
       recieveitems:{
         recieveqnt:0,
       },
    },
   }
  }

在这个循环中，这些数据被设置为v型

                      <tr v-for="ri in transactionData.recieveitems">
                        <td>{{ri.item_name}}</td>
                         <td>
                          <input type="text" class="form-control"  placeholder="Item Quantity" v-if="" v-model.number="ri.recieveqnt" >
                         </td>
                      </tr>

---

如果响应不是数组，则忽略它。如果是数组-如果缺少，则每个项目的属性

receiveqnt

将设置为0

axios.get('/api/transactions/getItems')
       .then(function (response){
         if(Object.prototype.toString.call(response.data) === '[object Array]') app.transactionData.receiveitems = response.data.map((item) =>
         {
           item.recieveqnt = item.recieveqnt || 0;
           return item;
         });
         else app.transactionData.receiveitems = [];
         console.log(response, app.transactionData.receiveitems);
       })
       .catch(function (response){
         console.log(response);
       })

---

共享您设置transactionData.senditems的方式？我认为它正在被取代

axios.get('/api/transactions/getItems')
       .then(function (response){
         app.transactionData.senditems = response.data;
         console.log(response);
       })
       .catch(function (response){
         console.log(response);
       })

axios.get('/api/transactions/getItems')
       .then(function (response){
         if(Object.prototype.toString.call(response.data) === '[object Array]') app.transactionData.receiveitems = response.data.map((item) =>
         {
           item.recieveqnt = item.recieveqnt || 0;
           return item;
         });
         else app.transactionData.receiveitems = [];
         console.log(response, app.transactionData.receiveitems);
       })
       .catch(function (response){
         console.log(response);
       })