examples/angular/hello_user_controller.html
<script src="angular.min.js"></script>
<script src="hello_user_controller.js"></script>
<div ng-app="HelloUserApp">
    <div ng-controller="HelloUserController">
        <input ng-model="name"><button ng-click="NameChange()">Update</button>
        <h1>greeting: {{greeting}}</h1>
        <h2>name: {{name}}</h2>
    </div>
</div>
examples/angular/hello_user_controller.js
angular.module('HelloUserApp', [])
      .controller('HelloUserController', ['$scope', function($scope) {
          $scope.NameChange = function () {
              $scope.greeting = "Hello " + $scope.name;
          };
      }]);