如何在Angular 2中调用条件单选按钮？

<div>
  <label>
    <input type="radio" name="options" [(ngModel)]="selectedOption" value="option1"> Option 1
  </label>
</div>
<div>
  <label>
    <input type="radio" name="options" [(ngModel)]="selectedOption" value="option2"> Option 2
  </label>
</div>

selectedOption: string;

ngOnInit() {
  this.selectedOption = "option1";
}

onButtonClick() {
  if (this.selectedOption === "option1") {
    // 执行选项1的逻辑
  } else if (this.selectedOption === "option2") {
    // 执行选项2的逻辑
  }
}