如何在加载angular 1.4数据表之前在列中添加锚标签

<table>
  <thead>
    <tr>
      <th><a href="#" ng-click="sortBy('name')">姓名</a></th>
      <th><a href="#" ng-click="sortBy('age')">年龄</a></th>
      <th><a href="#" ng-click="sortBy('gender')">性别</a></th>
    </tr>
  </thead>
  <tbody>
    <tr ng-repeat="person in people | orderBy:sortColumn">
      <td>{{ person.name }}</td>
      <td>{{ person.age }}</td>
      <td>{{ person.gender }}</td>
    </tr>
  </tbody>
</table>

angular.module('myApp', [])
  .controller('myController', function($scope) {
    $scope.people = [
      { name: '张三', age: 25, gender: '男' },
      { name: '李四', age: 30, gender: '女' },
      { name: '王五', age: 28, gender: '男' }
    ];
    
    $scope.sortColumn = 'name';
    
    $scope.sortBy = function(column) {
      $scope.sortColumn = column;
    };
  });