@angular/forms

RequiredValidator

directive

stable

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.

API

    
      class RequiredValidator extends AbstractValidatorDirective {}

required

string | boolean

Tracks changes to the required attribute bound to this directive.

Description

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.

Exported by

FormsModule
ReactiveFormsModule

Usage Notes

Adding a required validator using template-driven forms

<input name="fullName" ngModel required>