1.3.0-beta.2/docs/examples/example-example10/index.html

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Example - example-example10</title>
  

  <script src="../../../angular.min.js"></script>
  <script src="../../../angular-animate.js"></script>
  

  <script type="text/javascript">
    angular.element(document.getElementsByTagName('head')).append(angular.element('<base href="' + window.location.pathname + '" />'));
  </script>
</head>
<body ng-app="">
   <script>
   function Ctrl($scope) {
     $scope.userType = 'guest';
   }
 </script>
 <style>
  .my-form {
    -webkit-transition:all linear 0.5s;
    transition:all linear 0.5s;
    background: transparent;
  }
  .my-form.ng-invalid {
    background: red;
  }
 </style>
 <form name="myForm" ng-controller="Ctrl" class="my-form">
   userType: <input name="input" ng-model="userType" required>
   <span class="error" ng-show="myForm.input.$error.required">Required!</span><br>
   <tt>userType = {{userType}}</tt><br>
   <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br>
   <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br>
   <tt>myForm.$valid = {{myForm.$valid}}</tt><br>
   <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br>
  </form>
</body>
</html>