Method reset

packages/forms/src/model/form_group.ts:563–576

* Resets the `FormGroup`, marks all descendants `pristine` and `untouched` and sets * the value of all descendants to their default values, or null if no defaults were provided. * * You reset to a specific form state by passing in a map of states * that matches the structure of your form

(
    value: ɵTypedOrUntyped<TControl, ɵFormGroupArgumentValue<TControl>, any> = {},
    options: {onlySelf?: boolean; emitEvent?: boolean; overwriteDefaultValue?: boolean} = {},
  )

   * ```
   */
  override reset(
    value: ɵTypedOrUntyped<TControl, ɵFormGroupArgumentValue<TControl>, any> = {},
    options: {onlySelf?: boolean; emitEvent?: boolean; overwriteDefaultValue?: boolean} = {},
  ): void {
    this._forEachChild((control: AbstractControl, name) => {
      control.reset(value ? (value as any)[name] : null, {...options, onlySelf: true});
    });
    this._updatePristine(options, this);
    this._updateTouched(options, this);
    this.updateValueAndValidity(options);
    if (options?.emitEvent !== false) {
      this._events.next(new FormResetEvent(this));
    }
  }

  /**
   * The aggregate value of the `FormGroup`, including any disabled controls.