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Question

谁有JQery实例第五讲级联下拉菜单的全部代码？？？包括给服务器端赋值的js代码！

Answer 1

 #region 注册新账户
        public ActionResult Register()
        {
            ViewBag.ProvinceList = db.GetList<Province>();
            ViewBag.CityList = db.GetList<District>("CityID = 1");
            return View();
        }
        #endregion        #region 省市级联
        public ActionResult GetCity(string id)
        {
            return Json(db.GetList<City>("ProvinceID = " + id), JsonRequestBehavior.AllowGet);
        }        public ActionResult GetDistrict(string id)
        {
            return Json(db.GetList<District>("CityID = " + id),JsonRequestBehavior.AllowGet);
        }
        #endregion
@using BM.Web.Models@model BM.Web.Models.User@{
    ViewBag.Title = "Add";
    List<Province> pro = ViewBag.ProvinceList;
    List<District> dis = ViewBag.CityList;
    
    <script src="../../Scripts/jquery-1.4.4.js" type="text/javascript"></script>
    <script src="../../Scripts/jquery.validate.js" type="text/javascript"></script>
    
    <script type="text/javascript">
        $(function () {
            //选择省
            $("#proSel").change(function () {
                $("#citySel").empty();//清空select                $.getJSON("/Login/GetCity/" + $("#proSel").val(), function (data) {
                    $.each(data, function (i, item) {
                        $("<option></option>").val(item["CityID"]).text(item["CityName"]).appendTo($("#citySel"));
                    })
                    //
                    $("#disSel").empty();//清空select                    $.getJSON("/Login/GetDistrict/" + $("#citySel").val(), function (data) {
                        $.each(data, function (i, item) {
                            $("<option></option>").val(item["DistrictID"]).text(item["DistrictName"]).appendTo($("#disSel"));
                        })
                    })
                })
            })
            //选择城市
            $("#citySel").change(function () {
                $("#disSel").empty();//清空select                $.getJSON("/Login/GetDistrict/" + $("#citySel").val(), function (data) {
                    $.each(data, function (i, item) {
                        $("<option></option>").val(item["DistrictID"]).text(item["DistrictName"]).appendTo($("#disSel"));
                    })
                })
            })
        })
    </script>
    
    <script type="text/javascript">
        $(function () {
            $("form").validate({
                rules: {
                    UserName: {
                        required: true
                    },
                    NickName: {
                        required: true
                    },
                    UserPwd: {
                        required: true,
                        minlength: 5
                    },
                    Email: {
                        required: true,
                        email: true
                    },
                    PostDate: {
                        required: true,
                        dateISO: true
                    },
                    Phone: {
                        required: true,
                        regex: "/^(([0\+]\d{2,3}-)?(0\d{2,3})-)?(\d{7,8})(-(\d{3,}))?$/"
                    }
                },
                messages: {
                    //对应该每一个规则，显示提示的信息
                    UserName: {
                        required: "请输入UserName"
                    },
                    NickName: {
                        required: "请输入NickName"
                    },
                    UserPwd: {
                        required: "请输入UserPwd",
                        minlength: jQuery.format("密码不能少于{0}个字符")
                    },
                    Email: {
                        required: "请输入Email地址",
                        email: "请输入正确的Email地址"
                    },
                    PostDate: {
                        required: "请输入日期",
                        dateISO: "请输入合法的日期"
                    },
                    Phone: {
                        required: "请输入Phone",
                        regex: "请输入正确的Phone"
                    }
                }
            })
        })
    </script>
}<h2>Add</h2><script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>User</legend>        <div class="editor-label">
            @Html.LabelFor(model => model.UserName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.UserName)
            @Html.ValidationMessageFor(model => model.UserName)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.UserPwd)
        </div>
        <div class="editor-field">
            @Html.PasswordFor(model => model.UserPwd)
            @Html.ValidationMessageFor(model => model.UserPwd)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.NickName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.NickName)
            @Html.ValidationMessageFor(model => model.NickName)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.RealName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.RealName)
            @Html.ValidationMessageFor(model => model.RealName)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.UserPhoto)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.UserPhoto)
            @Html.ValidationMessageFor(model => model.UserPhoto)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.Email)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Email)
            @Html.ValidationMessageFor(model => model.Email)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.Phone)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Phone)
            @Html.ValidationMessageFor(model => model.Phone)
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.ProvinceID)
        </div>
        <div class="editor-field">
            <select id="proSel" name="proSel">
                @for (int i = 0; i < pro.Count; i++)
                {
                    <option value="@pro[i].ProvinceID">@pro[i].ProvinceName</option>
                }
            </select>
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.CityID)
        </div>
        <div class="editor-field">
            <select id="citySel" name="citySel">
                <option value="1">北京市</option>
            </select>
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.DistrictID)
        </div>
        <div class="editor-field">
           <select id="disSel" name="disSel">
                @for (int i = 0; i < dis.Count; i++)
                {
                    <option value="@dis[i].DistrictID">@dis[i].DistrictName</option>
                }
            </select>
        </div>        <div class="editor-label">
            @Html.LabelFor(model => model.PostDate)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.PostDate)
            @Html.ValidationMessageFor(model => model.PostDate)
        </div>        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
}<div>
    @Html.ActionLink("Back to List", "Index")
</div>
MVC中的，自己参照吧

Answer 2

#region 注册新账户
        public ActionResult Register()
        {
            ViewBag.ProvinceList = db.GetList<Province>();
            ViewBag.CityList = db.GetList<District>("CityID = 1");
            return View();
        }
        #endregion        #region 省市级联
        public ActionResult GetCity(string id)
        {
            return Json(db.GetList<City>("ProvinceID = " + id), JsonRequestBehavior.AllowGet);
        }        public ActionResult GetDistrict(string id)
        {
            return Json(db.GetList<District>("CityID = " + id),JsonRequestBehavior.AllowGet);
        }
        #endregion@using BM.Web.Models@{
    ViewBag.Title = "注册";
    List<Province> pro = ViewBag.ProvinceList;
    List<District> dis = ViewBag.CityList;
    
    <script type="text/javascript">
        $(function () {
            //选择省
            $("#proSel").change(function () {
                $("#citySel").empty();//清空select                $.getJSON("/Login/GetCity/" + $("#proSel").val(), function (data) {
                    $.each(data, function (i, item) {
                        $("<option></option>").val(item["CityID"]).text(item["CityName"]).appendTo($("#citySel"));
                    })
                    //
                    $("#disSel").empty();//清空select                    $.getJSON("/Login/GetDistrict/" + $("#citySel").val(), function (data) {
                        $.each(data, function (i, item) {
                            $("<option></option>").val(item["DistrictID"]).text(item["DistrictName"]).appendTo($("#disSel"));
                        })
                    })
                })
            })
            //选择城市
            $("#citySel").change(function () {
                $("#disSel").empty();//清空select                $.getJSON("/Login/GetDistrict/" + $("#citySel").val(), function (data) {
                    $.each(data, function (i, item) {
                        $("<option></option>").val(item["DistrictID"]).text(item["DistrictName"]).appendTo($("#disSel"));
                    })
                })
            })
        })
    </script>
}<h2>Register</h2><select id="proSel" name="proSel">
    @for (int i = 0; i < pro.Count; i++)
    {
        <option value="@pro[i].ProvinceID">@pro[i].ProvinceName</option>
    }
</select><select id="citySel" name="citySel">
    <option value="1">北京市</option>
</select><select id="disSel" name="disSel">
    @for (int i = 0; i < dis.Count; i++)
    {
        <option value="@dis[i].DistrictID">@dis[i].DistrictName</option>
    }
</select>
看这块简单些