基于<select>中的用户选择在Angular2中显示输入

<select [(ngModel)]="selectedOption">
  <option value="option1">选项1</option>
  <option value="option2">选项2</option>
  <option value="option3">选项3</option>
</select>

export class MyComponent {
  selectedOption: string;
}

<div *ngIf="selectedOption === 'option1'">
  <input type="text" placeholder="输入选项1的内容" [(ngModel)]="option1Input">
</div>

<div *ngIf="selectedOption === 'option2'">
  <input type="text" placeholder="输入选项2的内容" [(ngModel)]="option2Input">
</div>

<div *ngIf="selectedOption === 'option3'">
  <input type="text" placeholder="输入选项3的内容" [(ngModel)]="option3Input">
</div>

export class MyComponent {
  selectedOption: string;
  option1Input: string;
  option2Input: string;
  option3Input: string;
}