validation form group angular code example
Example 1: update formgroup value angular
To set all FormGroup values use, setValue:
this.myFormGroup.setValue({
formControlName1: myValue1,
formControlName2: myValue2
});
To set only some values, use patchValue:
this.myFormGroup.patchValue({
formControlName1: myValue1,
// formControlName2: myValue2 (can be omitted)
});
Example 2: angular9+how+to+add+validators
this.form.controls["firstName"].setValidators([Validators.minLength(1), Validators.maxLength(30)]);