使用angular4在typescript中对数据表进行排序

<table>
  <thead>
    <tr>
      <th (click)="sortTable('name')">Name</th>
      <th (click)="sortTable('age')">Age</th>
      <th (click)="sortTable('email')">Email</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor="let item of items">
      <td>{{ item.name }}</td>
      <td>{{ item.age }}</td>
      <td>{{ item.email }}</td>
    </tr>
  </tbody>
</table>

sortTable(field: string) {
  this.items.sort((a, b) => {
    if (a[field] < b[field]) {
      return -1;
    } else if (a[field] > b[field]) {
      return 1;
    } else {
      return 0;
    }
  });
}

items: any[] = [
  { name: 'John', age: 25, email: 'john@example.com' },
  { name: 'Alice', age: 30, email: 'alice@example.com' },
  { name: 'Bob', age: 20, email: 'bob@example.com' }
];