aurelia/aurelia

<form submit.trigger="submit($event)">
  <div validation-errors.from-view="usernameErrors">

    <label> Username </label>
    <input id="username" type="text" value.bind="user.username & validate">

    <div>
      <span repeat.for="error of usernameErrors">${error.result.message}</span>
    </div>
  </div>

  <div validation-errors.from-view="passwordErrors">

    <label>Password</label>
    <input type="password" value.bind="user.password & validate">

    <div>
      <span repeat.for="error of passwordErrors">${error.result.message}</span>
    </div>
  </div>

  <button click.trigger="submit($event)">
    Sign in
  </button>

</form>