index.html

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
  <body ng-app"">
  <div ng-app="" ng-init="myCol='lightblue';title='Weather Balloon Data'">
    <h1> {{title}} </h1>
  </div>

  </body>
  <button onclick="getData()">Get Data</button>

  <script>
    function getData(){
      alert("Called")
      $http({
        method: 'GET',
        url: '/someUrl'
      }).then(function successCallback(response) {
          // this callback will be called asynchronously
          // when the response is available
          alert("Test")
        }, function errorCallback(response) {
          // called asynchronously if an error occurs
          // or server returns response with an error stat.
          alert("Error")
        });

    }
  </script>
</html>