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This is the archived documentation for Angular v17. Please visit angular.dev to see this page for the current version of Angular.

RequiredValidator

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>