Angular - ng-submit access to form fields

app.js

myApp.controller('myCtrl', function( $scope ) {


  
 		$scope.addNewItem = function ( event ) {
			var formElement = angular.element(event.target);
			var itemIndex = formElement[0].itemIndex.value;
			var optionName = formElement[0].optionName.value;



			var newOption = {
				'name': optionName,
			};

			if ( !newOption.name) {
				return;
			}

      $scope.items[itemIndex].options.push(newOption);
			
			formElement[0].optionName.value = '';

		};
  
});

index.html

<form ng-submit="addNewItem( $event )">
	<input type="hidden" name="itemIndex" value="{{itemIndex}}">
	Floor Options<br />
	Option Name: <input type="text" name="optionName"><br>
	<input type="submit" class="button" value="Add Option" >
</form>