W3cubDocs

MinLengthValidator

directive

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.

Exported from

```
ReactiveFormsModule
```
```
FormsModule
```

Selectors

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

Properties

Property	Description
`@Input()minlength: string \| number \| null`	Tracks changes to 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">

© 2010–2021 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://v12.angular.io/api/forms/MinLengthValidator