MinLengthValidator

A directive that adds minimum length validation to controls marked with the minlength attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

See also

• Form Validation

NgModules

• ReactiveFormsModule

• FormsModule

Selectors

• [minlength][formControlName]
• [minlength][formControl]
• [minlength][ngModel]

Properties

Property	Description
@Input()minlength: string | number	Tracks changes to the the minimum length bound to this directive.

Description

Adding a minimum length validator

The following example shows how to add a minimum length validator to an input attached to an ngModel binding.

<input name="firstName" ngModel minlength="4">