Sample Ajax call

function ajaxCall() {
    this.send = function(data, url, method, success, type) {
        type = type || 'json';
        var successRes = function(data) {
            success(data);
        };

        var errorRes = function(e) {
            console.log(e);
            alert("Error found \nError Code: " + e.status + " \nError Message: " + e.statusText);
        };
        $.ajax({
            url: url,
            type: method,
            data: data,
            success: successRes,
            error: errorRes,
            dataType: type,
            timeout: 60000
        });

    }

}

function locationInfo(rootUrl) {
    // TODO:: BASE URL
    //var rootUrl = "https://healthxe.com/home/dropdownapi";
    var call = new ajaxCall();
    this.getCities = function(id) {
        $(".cities option:gt(0)").remove();
        var url = rootUrl + 'home/dropdownapi?type=getCities&stateId=' + id;
        var method = "post";
        var data = {};
        $('.cities').find("option:eq(0)").html("Please wait..");
        call.send(data, url, method, function(data) {
            $('.cities').find("option:eq(0)").html("Select City");
            if (data.tp == 1) {
                $.each(data['result'], function(key, val) {
                    var option = $('<option />');
                    option.attr('value', key).text(val);
                    $('.cities').append(option);
                    $('.cities').trigger("chosen:updated");
                });
                $(".cities").prop("disabled", false);
            } else {
                alert(data.msg);
            }
        });
    };

    this.getStates = function(id) {
        $(".states option:gt(0)").remove();
        $(".cities option:gt(0)").remove();
        var url = rootUrl + 'home/dropdownapi?type=getStates&countryId=' + id;
        var method = "post";
        var data = {};
        $('.states').find("option:eq(0)").html("Please wait..");
        call.send(data, url, method, function(data) {
            $('.states').find("option:eq(0)").html("Select State");
            if (data.tp == 1) {
                $.each(data['result'], function(key, val) {
                    var option = $('<option />');
                    option.attr('value', key).text(val);
                    $('.states').append(option);
                    $('.states').trigger("chosen:updated");
                });
                $(".states").prop("disabled", false);
            } else {
                alert(data.msg);
            }
        });
    };

    this.getCountries = function() {
        var url = rootUrl + 'home/dropdownapi?type=getCountries';
        var method = "post";
        var data = {};
        $('.countries').find("option:eq(0)").html("Please wait..");
        call.send(data, url, method, function(data) {
            $('.countries').find("option:eq(0)").html("Select Country");
            //            console.log(data);
            if (data.tp == 1) {
                $.each(data['result'], function(key, val) {
                    var option = $('<option />');
                    option.attr('value', key).text(val);
                    $('.countries').append(option);
                    $('.countries').trigger("chosen:updated");
                });
                $(".countries").prop("disabled", false);

            } else {
                alert(data.msg);
            }
        });
    };

}