javascript - event.stopPropagation() 不适用于表单

Question

我有一个简单的 Angular 形式，例如:

  <form [formGroup]="form">
    <div>
      <input type="text" (keydown.enter)="onEnterPerssed($event)" [formControl]="myList" formControlName="myList">
    </div>
   <br>

    <p *ngIf="sendData" class="mt-1">Data send successfully</p>

    <button type="submit" (click)="onSubmit(form)" class="btn btn-block btn-primary mt-2" style="width: 100px;" [disabled]="form.invalid">
    Submit
    </button>
  </form>

export class AppComponent implements OnInit {
  sendData: boolean = false;

  form: FormGroup;
  isDisabled: boolean = true;
  myList: FormControl = new FormControl('sdfsdf', [Validators.required  ]);

  constructor(private fb: FormBuilder) { }

  ngOnInit(): void {
    this.form = this.fb.group({
      myList: this.myList
    });
  }

  onSubmit(form): void {
    this.sendData = true;
    console.log('data send successfully');
  }

  onEnterPerssed(event: Event) {
    event.stopPropagation();
    console.log('asdasfasfsfafasfasf');
  }
}

当我们在输入字段上单击 Enter 时，是否有任何解决方案可以防止提交表单，而不更改按钮类型(提交 => 按钮)

Answer 1

更改 form 标记上的提交事件，并从提交按钮中删除点击事件。

<form [formGroup]="form" (ngSubmit)="onSubmit($event)">

onSubmit(event) {
    event.preventDefault();
    // logic goes here
}

ngSubmit 确保当处理程序代码抛出异常(这是提交的默认行为)并导致实际的 http post 请求时，表单不会提交。