angular / 11.2.14 / api / forms / requiredvalidator.html /

RequiredValidator

directive

A directive that adds the required validator to any controls marked with the required attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

See also

Exported from

Selectors

  • :not([type=checkbox])[required][formControlName]
  • :not([type=checkbox])[required][formControl]
  • :not([type=checkbox])[required][ngModel]

Properties

Property Description
@Input()required: boolean | string

Tracks changes to the required attribute bound to this directive.

Description

Adding a required validator using template-driven forms

<input name="fullName" ngModel required>

© 2010–2021 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://v11.angular.io/api/forms/RequiredValidator