$(document).ready(function() {
                $("#cascadeSelection").on("change", function() {
                    $(".category").on("click", function() {
                        var depth;

                        depth = $(this).data("level");
                        console.log("Дълбочина: " + depth);
                        $.ajax({
                            type: "POST",
                            dataType: 'json',
                            url: "ajax/category/" + $(this).val(),
                        }).done(function(msg) {

                            if (msg) {
                                console.log("Има данни");

                            } else {
                                console.log("Няма данни");
                            }
                            var content = '';
                            content += '<select name="category" class="category form-control">';
                            content += '<option value>Please Select</option>';
                            for (key in msg) {
                                content += '<option value="' + msg[key].category_id + '">' + msg[key].category_name + '</option>';
                                //console.log(msg[key].category_id);
                            }
                            content += "</select>";
                            content += '<div id="sub"></div>';
                            $("#sub").html(content);
                        });
                    });
                });
            });