Validation classes in Angular

• ng-untouched
• ng-touched
• ng-pristine
• -ng-dirty
• ng-valid
• ng-invalid

<form #form="ngForm" ngNativeValidate>
    <div class="form-group">
        <label for="name">Name</label>
        <input id="name" name="name" class="form-control" required minlength="3" #classTest />
    <button class="btn btn-primary">Send</button>
</form>

{{classTest.className}}