Requiring a checkbox to be checked

Question

I want a button to be disabled until a checkbox has been checked using a FormBuilder for Angular. I don\'t want to explicitly check the value of the checkbox and would prefe

Answer 1

Create a method to detect any changes

checkValue(event: any) {
    this.formulario.patchValue({
      checkboxControlName: event.target.checked
    })
}

Put that method on an event change and ngModel required properties

And use the convetional way to validate

this.formulario = new FormGroup({
  checkboxControlName: new FormControl('', [Validators.required])
});

Source