                    $.each(data, function (i, n) {
                        if (i < (data.length)) {
                            $("select[name='areaId_" + (i + 1) + "']").change(function () {
                                changeareaIdArea(i + 1, data.length);
                            });
                        }
                    });

                });
                function changeareaIdArea(i, max_i) {
                    //清除后面节点
                    for (var x = i + 1; x <= 6; x++)