Debugging Async calls

    var maxRetry = 3;
    $scope.retries = 0;
    $scope.execute = function() {
        $scope.retries = 0;
        $scope.status = 'fa-spinner fa-spin';
        makeAjaxCall();
    }

    function successAjaxCall(response) {
        $scope.result = response.data;
        $scope.status = 'fa-thumbs-o-up';
    }

    function errorAjaxCall(err) {
        if (maxRetry > $scope.retries) {
            setTimeout(makeAjaxCall, 2000);
        } else {
            $scope.status = 'fa-exclamation-triangle';
        }
    }

    function makeAjaxCall() {
        $scope.retries++;
        $http.jsonp('nonworkingApiUrl')
            .then(successAjaxCall, errorAjaxCall);
    }