alias.html

<!-- Sin Alias -->
<div ng-controller="CustomersController">
  <ul>
    <li ng-repeat="customer in customers">
      {{ customer.name }}
    </li>
  </ul>
</div>

<script>
  function CustomersController ($scope) {
    $scope.customers = [
      { name: 'John Doe' }.
      { name: 'Jane Juarez' }
    ];
  }
</script>

<!-- Con Alias -->
<div ng-controller="CustomersController as ctrl">
  <ul>
    <li ng-repeat="customer in ctrl.customers">
      {{ customer.name }}
    </li>
  </ul>
</div>

<script>
  function CustomersController () {
    this.customers =  [
      { name: 'John Doe' }.
      { name: 'Jane Juarez' }
    ];
  }  
</script>