在带有AngularJS的表中使用行跨度

$scope.tableData = [
  { name: 'John', age: 25, country: 'USA' },
  { name: 'Alice', age: 30, country: 'Canada' },
  { name: 'Bob', age: 28, country: 'USA' },
  { name: 'Emily', age: 35, country: 'Australia' }
];

<table>
  <tr ng-repeat="row in tableData">
    <td ng-if="$index === 0" rowspan="{{getRowCount(tableData, row.country)}}">{{row.country}}</td>
    <td>{{row.name}}</td>
    <td>{{row.age}}</td>
  </tr>
</table>

$scope.getRowCount = function(data, country) {
  let count = 0;
  for (let i = 0; i < data.length; i++) {
    if (data[i].country === country) {
      count++;
    }
  }
  return count;
};