如何在dropdown angular中获取我选择的id？

<select [(ngModel)]="selectedId">
  <option *ngFor="let item of items" [value]="item.id">{{ item.name }}</option>
</select>

export class MyComponent {
  selectedId: number;
  items: any[] = [
    { id: 1, name: 'Option 1' },
    { id: 2, name: 'Option 2' },
    { id: 3, name: 'Option 3' }
  ];

  // 在需要的地方使用selectedId
  onFormSubmit() {
    console.log('Selected id:', this.selectedId);
  }
}