angular - 如何在 formcontrol 中设置默认 bool 值 false

Question

在表单控件(主字段)中设置默认 bool 值 false

this.contactForm = new FormGroup({
      name: new FormControl('', [ Validators.required]),
      contact: new FormControl('', [ Validators.required,Validators.minLength(10)]),
      email: new FormControl('', [ Validators.required,Validators.email]),
      primary: new FormControl('',[])
    });

HTML 文件:-请看html文件

<form [formGroup]="contactForm">
    <mat-checkbox class="example-margin" formControlName="primary" [value]="primary" [(ngModel)]="primary"> Make this primary </mat-checkbox>
  </form>

Answer 1

您可以使用 patchValue()在你的 OnInit() 函数中:

this.contactForm.patchValue({primary: false});