如何为angularjs中的动态行生成json数据

Question

我想为angularjs中的动态行生成Json数据，我为每个输入标记使用了ng-model。

  <form name="userForm3" ng-submit="submit()">
   <tr ng-repeat="item in invoice.items">
    <td><select   ng-options="item as item.name for item in invoice.items[0].loyality " name="item.loyality" ng-model=" form3.loyality" required></select></td>
    <td><input type="text" name="item.value" ng-model="form3.value" required style="width:100px"></td>
       <td><select   ng-options="item as item.name for item in invoice.items[0].period " name="item.period" ng-model= " form3.period" required ></select></td>
     <td><a href ng-click="removeItem($index)" class="glyphicon glyphicon-trash"></a></td>
    <td  ng-if=" form3.loyality || form3.value || form3.period " ><div id="c6">  <img   ng-src="images/Assets/WIP.png" /></div></td>
    </tr>

我的角度代码是

 var validationApp = angular.module('validationApp', ['ngFlag']);
 $scope.invoice = {
    items: [{
         loyality: [{name:'points'},{name:'credits'}],
         value:0,
    period: [{name:'activity1'},{name:'activity2'}]
        }],
        items1:[{currency: [{name:'point'},{name:'credit'}],   value1:0   }]

};
  $scope.submit = function() {
  var data3=$scope.form3;
  console.log(data3);
    }

});