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不限级别联动

2024-07-15 03:08:32   220人阅读

不限级别的联动，下边来看看代码的实现，先看看效果吧

只要点击下拉框的值，如果查询出下级还有内容则还会追加一个下拉框，这是一个简单的功能，看看代码吧

html

1 <div class="col-md-4">2    @Html.DropDownList("infoSectionId", ViewData["InfoSectionFather"] as SelectList,"---请选择")3    <span id="spanChild"></span>4    </div>

js代码

  $(document).ready(function() {//当点击第一个下拉框时            $("#infoSectionId").change(function () {
                            var selsecid = $(this).find("option:selected").val();                GetChildRen(selsecid, "spanChild");                $("#ChangeInfoSectionHidden").val(selsecid);            });            $("#spanChild").on("change", ".childselectshowlist", function (event) {                var selsecid = $(this).find("option:selected").val();                var selectText = $(this).find("option:selected").html();                getChildRecTwo(selsecid, "spanChild", $("#spanChild select").index(this));                $("#ChangeInfoSectionHidden").val(selsecid);//得到点击后的值            });        });
/// <summary>得到子级</summary>        function GetChildRen(secid, domMainContain) {            var selectpar = $("#" + domMainContain);            selectpar.html("");            if (secid == null || secid == -1) {                return;            }            selectpar.append("<img src=http://www.mamicode.com/‘/Content/Images/loading4.gif‘ id=‘childclassloadimgimg‘ />");            $.post("/InfoSection/GetChild?q=" + new Date().getTime(), {                ‘id‘: secid            }, function(data) {                //  alert(eval(data));                $("#childclassloadimgimg").remove();                if (eval(data).length > 0) {                    var timeid = "classshowlist" + new Date().getTime();                    selectpar.append(‘<select id="‘ + timeid + ‘" class="childselectshowlist" style="margin:0px 0px 0px 10px;"></select>‘);                    selectpar.find("#" + timeid).append("<option value=http://www.mamicode.com/‘-1‘ >请选择");                    $.each(eval(data), function(i, val) {                        selectpar.find("#" + timeid).append("<option value=http://www.mamicode.com/‘" + val.id + "‘>" + val.name + "</option>");                    });                }            }, ‘json‘);        };

Controller控制器代码

  [AuthorizationCodeAttribute]        [Description("查询分类目录")]        [HttpPost]        public ActionResult GetChild()        {            string strId = Request.Params["id"];            List<Hashtable> hashSectionList = new List<Hashtable>();            int id = 0;            int.TryParse(strId, out id);            if (id > 0)            {                InfoSectionOperator dal = new InfoSectionOperator();                IList<InfoSection> ilList = dal.GetList(string.Format("ParentId={0}", id));                if (ilList.Count > 0)                {                    hashSectionList.AddRange(ilList.Select(FormtSimpData));                }            }            return Json(hashSectionList, JsonRequestBehavior.AllowGet);        }

 

 

 

 


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