如何使用angular js从动态生成的表及其行中计算值？

<div ng-controller="MyController">
  <table>
    <tr>
      <th>列1</th>
      <th>列2</th>
      <th>计算结果</th>
    </tr>
    <tr ng-repeat="item in data">
      <td>{{ item.column1 }}</td>
      <td>{{ item.column2 }}</td>
      <td>{{ calculateValue(item.column1, item.column2) }}</td>
    </tr>
  </table>
</div>

angular.module('myApp', [])
  .controller('MyController', function($scope) {
    $scope.data = [
      { column1: 1, column2: 2 },
      { column1: 3, column2: 4 },
      { column1: 5, column2: 6 }
    ];

    $scope.calculateValue = function(column1, column2) {
      return column1 + column2;
    };
  });