angular submit with required code example

Example: angular submit with required

<form (ngSubmit)="onSubmit()" #testForm="ngForm" ngNativeValidate>
  <input type="text" id="test1" name="test1" [(ngModel)]="test" required>
  <input type="text" id="test2" name="test2" [(ngModel)]="test" [required]="true">
  <input type="text" id="test3" name="test3" [(ngModel)]="test" [attr.required]="true">
  <button type="submit">submit</button>
</form>


<-- The important thing here is the "ngNativeValidate" -->