at this point, I'm new to AngularJS.

This works:

scope.$apply(scope.hideTooltip());

But calling the function dynamically does not work:

scope.$apply(
  scope.$eval(attrs.ngEnter, {'event': event})
);

HTML:

<input type="text" ng-model="value" ng-enter="hideToolTip()" />

The enitre directive:

   app.directive('ngEnter', function() {
            return function(scope, element, attrs) {
                console.log(scope.hideTooltip());
                element.bind("keydown keypress", function(event) {
                    if(event.which === 13) {
                        console.log(attrs.ngEnter);
                        scope.$apply(
                            scope.$eval(attrs.ngEnter, {'event': event})
                        );
                        event.preventDefault();
                    }
                });
            };
        });

So, how do I call a function dynamically in an AngularJS directive?