我的aspx网页上有一个html Select和一个隐藏的Asp.Net Label控件：
<select id="txtSubSector" name="txtSubSector"></select>
<asp:Label ID="lblSubSector" ClientIDMode="Static" runat="server" style="display:none" ></asp:Label>
我的jquery函数填充了select控件。现在我尝试用jquery设置它的选择值：
var subs = $('#lblSubSector').text();
$('#txtSubSector').val(subs);
然后，不会更改选择的选定值。但是当我在最后一个代码之前只添加alert（）函数时，没有任何冲突，它可以成功运行。像这样：
var subs = $('#lblSubSector').text();
alert(subs);
$('#txtSubSector').val(subs);
有谁能说我如何设置没有警报功能的值？
注意：select和asp：Label控件都在UpdatePanel控件中。我在jQuery pageLoad（）函数中编写了我的jquery函数，以防止jquery与UpdatePanel冲突。我的所有其他功能在这里成功运作。
更新
我的aspx文件在这里：
<%@ Page EnableEventValidation="true" Title="" Language="C#" MasterPageFile="~/mpClient.master" AutoEventWireup="true" CodeFile="editjob.aspx.cs" Inherits="editjob" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
<script type="text/javascript" src="style/jquery-1.11.2.min.js"></script>
<link rel="stylesheet" type="text/css" href="style/style.css" />
<link rel="stylesheet" type="text/css" href="cp/style/style-cp.css" />
<link rel="stylesheet" href="style/jquery-ui-1.11.4.custom/jquery-ui.css" />
<link rel="stylesheet" href="style/jquery-ui-1.11.4.custom/jquery-ui-timepicker-addon.css" />
<script src="style/jquery-ui-1.11.4.custom/jquery-ui.js"></script>
<script src="style/jquery-ui-1.11.4.custom/jquery-ui-timepicker-addon.js"></script>
<script type="text/javascript">
jQuery("document").ready(function ($) {
$('.blockGroup input, select').change(function () {
$(this).removeClass('make-ann-input-highlight');
$('.lblValidation').hide(200);
});
$('#txtPostedDate').click(function () {
return false;
});
});
function fillSubSectors() {
$('#txtSubSector').empty();
var typeid = $('#txtSector').val();
getSubSectors(typeid);
};
function getSubSectors(typeid) {
$.ajax({
type: 'POST',
url: 'editjob.aspx/getSubSectors',
data: '{ "typeid" : "' + typeid + '" }',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (result) {
for (var i = 0; i < result.d.length; i = i + 2) {
var newOption = "<option value=" + result.d[i] + ">" + result.d[i + 1] + "</option>";
$("#txtSubSector").append(newOption);
}
},
error: function () {
$('#lblStatus').html('Məlumat sorğusunda problem yarandı..');
}
});
};
// bu pageLoad funksiyasi icine yazanda UpdatePanel icinde olanlar isleyir
function pageLoad() {
$('#txtSector').change(function () {
fillSubSectors();
});
$('#txtSector').ready(function () {
fillSubSectors();
});
//$('#txtSubSector').ready(function () {
//});
$.when(fillSubSectors).done(function () {
var subs = $('#lblSubSector').text();
$('#txtSubSector').val(subs);
});
};
function scrollMove(id) {
$(id).removeClass('make-ann-input').addClass('make-ann-input-highlight');
$('.lblValidation').show(200);
$('html, body').animate({ scrollTop: $(id).offset().top - 150 }, 700);
};
function showTrueMessage() {
setTimeout(function () { $('#jobAdded').fadeIn(1500); setTimeout(function () { $('#jobAdded').fadeOut(1500); }, 3500); }, 0);
};
function showFalseMessage() {
setTimeout(function () { $('#msgError').fadeIn(1500); setTimeout(function () { $('#msgError').fadeOut(1500); }, 3500); }, 0);
};
function showPicErrorMessage() {
setTimeout(function () { $('#msgPicError').fadeIn(1500); setTimeout(function () { $('#msgPicError').fadeOut(1500); }, 3500); }, 0);
};
function clearInputs() {
$("#panel1 :input").val('');
$("#panel2 :input").val('');
$(".container").find("select").prop('selectedIndex', 0);
};
$(function () {
$("#txtPostedDate, #txtLastApplyDate").datetimepicker({
showButtonPanel: true,
dateFormat: 'dd/mm/yy'
});
});
// bu funksiya heleki isledilmir
function showEditDiv() {
$("#divEnterIdentNo").fadeOut(500);
setTimeout(function () { $("#divEditAnn, #divSaveInfo").fadeIn() }, 500);
// $("#divAddedCategory").fadeIn();
// setTimeout(function () { $("#divAddedCategory").fadeOut() }, 3000);
};
//bu isleyir
function showEditDivNoEffect() {
$("#divEnterIdentNo").hide();
$("#divEditAnn, #divSaveInfo").show();
};
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<!-- Yerləşdirildi Və Error Mesajları -->
<div id="jobAdded" class="msg-job-added">İş Elanı Müvəffəqiyyətlə Yeniləndi</div>
<div id="msgError" class="msg-error">Yenilənmə Zamanı Problem Yarandı</div>
<div id="msgPicError" class="msg-error">Yenilənəcək Şəkil Faylı Seçilməyib</div>
<!-- -->
<div class="container" style="margin-top: 30px">
İş Elanını Yenilə
</div>
<hr />
<asp:UpdatePanel ID="upEditAnn" runat="server" style="min-height:300px">
<ContentTemplate>
<!-- Identifikasiya nomresini daxil etme bolmesi -->
<div id="divEnterIdentNo" class="container" style="text-align: center">
<asp:TextBox ID="txtIdentificationNo" runat="server" Style="height: 24px; width: 200px; font-size: 15px"></asp:TextBox>
<asp:Button ID="btnGetAnnouncement" ClientIDMode="Static" runat="server" CssClass="btn-add-ann" Text="Redaktə" OnClick="btnGetAnnouncement_Click" />
</div>
<!-- -->
<div id="divEditAnn" class="container" style="display:none">
<asp:Panel ID="pnlEditAnn" runat="server" Visible="false">
<label id="lblStatus"></label>
<div style="color: gray; font-style:italic; font-size:14px">
Qeyd: Nəzərə alın ki, siz elanı yenilədikdə yenidən bizim təsdiqimiz ilə yayımlanacaq..
</div>
<div class="editBlockLeft">
<div class="blockGroup">
<div>Elanın Nömrəsi</div>
<asp:Label ID="lblID" runat="server" Style="font-size: 15px; font-family: calibri; color: gray" Text=""></asp:Label>
</div>
<div class="blockGroup">
<div>Şəkil</div>
<asp:Image ID="imgOrgPic" runat="server" CssClass="imgOrgPic" />
<br />
<div style="width: 100% !important">
<asp:UpdatePanel ID="upImage" runat="server" UpdateMode="Conditional" RenderMode="Inline">
<ContentTemplate>
<asp:RadioButton ID="rdbNotChange" runat="server" Checked="true" GroupName="pic" OnCheckedChanged="rdbNotChange_CheckedChanged" Text="Dəyişmə" AutoPostBack="True" CssClass="radiobutton" />
<asp:RadioButton ID="rdbChange" runat="server" GroupName="pic" Text="Dəyiş" AutoPostBack="True" OnCheckedChanged="rdbChange_CheckedChanged" CssClass="radiobutton" />
<asp:RadioButton ID="rdbDelete" runat="server" GroupName="pic" Text="Sil" AutoPostBack="True" OnCheckedChanged="rdbDelete_CheckedChanged" CssClass="radiobutton" />
<asp:FileUpload ID="fuOrgLogo" runat="server" Enabled="false" CssClass="fileupload" /><br />
<asp:Label ID="lblOldPicPath" runat="server" Visible="false"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</div>
<br />
<div class="blockGroup">
<div>Təşkilat adı</div>
<asp:TextBox ID="txtOrgName" runat="server" ClientIDMode="Static" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>Vəzifə</div>
<asp:TextBox ID="txtPosition" runat="server" ClientIDMode="Static" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>Email</div>
<asp:TextBox ID="txtEmail" runat="server" ClientIDMode="Static" TextMode="Email" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>Telefon</div>
<asp:TextBox ID="txtPhone" runat="server" ClientIDMode="Static" TextMode="Phone" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>Əlaqəli şəxs</div>
<asp:TextBox ID="txtRelatedPerson" runat="server" ClientIDMode="Static" Text=''></asp:TextBox>
</div>
<div class="blockGroup">
<div>Sahə</div>
<asp:DropDownList CssClass="" ID="txtSector" runat="server" DataTextField="NAME" DataValueField="ID" ClientIDMode="Static"></asp:DropDownList>*
</div>
<div class="blockGroup">
<div>İxtisas</div>
<select id="txtSubSector" name="txtSubSector"></select>
<asp:Label ID="lblSubSector" ClientIDMode="Static" runat="server" Visible="true" ></asp:Label> <!-- Gizli Ixtisas label-i -->
</div>
<div class="blockGroup">
<div>İş tipi</div>
<asp:DropDownList ID="txtJobType" runat="server" ClientIDMode="Static" DataSourceID="dsJobType" DataTextField="NAME" DataValueField="ID"></asp:DropDownList>*
</div>
<div class="blockGroup">
<div>Şəhər</div>
<asp:DropDownList ID="txtCity" runat="server" ClientIDMode="Static" DataSourceID="dsCity" DataTextField="NAME" DataValueField="ID"></asp:DropDownList>*
</div>
<div class="blockGroup">
<div>Minimum Maaş</div>
<asp:DropDownList ID="txtSalaryMin" runat="server" ClientIDMode="Static">
<asp:ListItem Value="-1">Seçilməyib</asp:ListItem>
<asp:ListItem>100</asp:ListItem>
<asp:ListItem>200</asp:ListItem>
<asp:ListItem>300</asp:ListItem>
<asp:ListItem>400</asp:ListItem>
<asp:ListItem>500</asp:ListItem>
<asp:ListItem>600</asp:ListItem>
<asp:ListItem>700</asp:ListItem>
<asp:ListItem>800</asp:ListItem>
<asp:ListItem>900</asp:ListItem>
<asp:ListItem>1000</asp:ListItem>
<asp:ListItem>1100</asp:ListItem>
<asp:ListItem>1200</asp:ListItem>
<asp:ListItem>1300</asp:ListItem>
<asp:ListItem>1400</asp:ListItem>
<asp:ListItem>1500</asp:ListItem>
<asp:ListItem>1600</asp:ListItem>
<asp:ListItem>1700</asp:ListItem>
<asp:ListItem>1800</asp:ListItem>
<asp:ListItem>1900</asp:ListItem>
<asp:ListItem>2000</asp:ListItem>
<asp:ListItem>2100</asp:ListItem>
<asp:ListItem>2200</asp:ListItem>
<asp:ListItem>2300</asp:ListItem>
<asp:ListItem>2400</asp:ListItem>
<asp:ListItem>2500</asp:ListItem>
<asp:ListItem>2600</asp:ListItem>
<asp:ListItem>2700</asp:ListItem>
<asp:ListItem>2800</asp:ListItem>
<asp:ListItem>2900</asp:ListItem>
<asp:ListItem>3000</asp:ListItem>
<asp:ListItem>3200</asp:ListItem>
<asp:ListItem>3500</asp:ListItem>
<asp:ListItem>3800</asp:ListItem>
<asp:ListItem>4000</asp:ListItem>
<asp:ListItem>4200</asp:ListItem>
<asp:ListItem>4500</asp:ListItem>
<asp:ListItem>4800</asp:ListItem>
<asp:ListItem>5000</asp:ListItem>
<asp:ListItem>5500</asp:ListItem>
<asp:ListItem>6000</asp:ListItem>
</asp:DropDownList>*
</div>
<div class="blockGroup">
<div>Maksimum Maaş</div>
<asp:DropDownList ID="txtSalaryMax" runat="server" ClientIDMode="Static">
<asp:ListItem Value="-1">Seçilməyib</asp:ListItem>
<asp:ListItem>100</asp:ListItem>
<asp:ListItem>200</asp:ListItem>
<asp:ListItem>300</asp:ListItem>
<asp:ListItem>400</asp:ListItem>
<asp:ListItem>500</asp:ListItem>
<asp:ListItem>600</asp:ListItem>
<asp:ListItem>700</asp:ListItem>
<asp:ListItem>800</asp:ListItem>
<asp:ListItem>900</asp:ListItem>
<asp:ListItem>1000</asp:ListItem>
<asp:ListItem>1100</asp:ListItem>
<asp:ListItem>1200</asp:ListItem>
<asp:ListItem>1300</asp:ListItem>
<asp:ListItem>1400</asp:ListItem>
<asp:ListItem>1500</asp:ListItem>
<asp:ListItem>1600</asp:ListItem>
<asp:ListItem>1700</asp:ListItem>
<asp:ListItem>1800</asp:ListItem>
<asp:ListItem>1900</asp:ListItem>
<asp:ListItem>2000</asp:ListItem>
<asp:ListItem>2100</asp:ListItem>
<asp:ListItem>2200</asp:ListItem>
<asp:ListItem>2300</asp:ListItem>
<asp:ListItem>2400</asp:ListItem>
<asp:ListItem>2500</asp:ListItem>
<asp:ListItem>2600</asp:ListItem>
<asp:ListItem>2700</asp:ListItem>
<asp:ListItem>2800</asp:ListItem>
<asp:ListItem>2900</asp:ListItem>
<asp:ListItem>3000</asp:ListItem>
<asp:ListItem>3200</asp:ListItem>
<asp:ListItem>3500</asp:ListItem>
<asp:ListItem>3800</asp:ListItem>
<asp:ListItem>4000</asp:ListItem>
<asp:ListItem>4200</asp:ListItem>
<asp:ListItem>4500</asp:ListItem>
<asp:ListItem>4800</asp:ListItem>
<asp:ListItem>5000</asp:ListItem>
<asp:ListItem>5500</asp:ListItem>
<asp:ListItem>6000</asp:ListItem>
</asp:DropDownList>
</div>
<div class="blockGroup">
<div>Minimum Yaş</div>
<asp:DropDownList ID="txtAgeMin" ClientIDMode="Static" runat="server"></asp:DropDownList>*
</div>
<div class="blockGroup">
<div>Maksimum Yaş</div>
<asp:DropDownList ID="txtAgeMax" runat="server" ClientIDMode="Static"></asp:DropDownList>
</div>
<div class="blockGroup">
<div>Cinsi</div>
<asp:DropDownList ID="txtSex" runat="server" ClientIDMode="Static" DataSourceID="dsSex" DataTextField="NAME" DataValueField="ID"></asp:DropDownList>
</div>
</div>
<div class="editBlockLeft">
<div class="blockGroup">
<div>Təhsil səviyyəsi</div>
<asp:DropDownList ID="txtEducationLevel" runat="server" ClientIDMode="Static" DataSourceID="dsEducationLevel" DataTextField="NAME" DataValueField="ID"></asp:DropDownList>
</div>
<div class="blockGroup">
<div>Təcrübə müddəti</div>
<asp:DropDownList ID="txtExperienceTime" runat="server" ClientIDMode="Static">
<asp:ListItem Value="-1">Seçilməyib</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
</asp:DropDownList>
</div>
<div class="blockGroup">
<div>Əsas tələblər</div>
<asp:TextBox ID="txtQualifications" runat="server" ClientIDMode="Static" CssClass="multlineInput" TextMode="MultiLine" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>İş haqqında məlumat</div>
<asp:TextBox ID="txtJobDescription" runat="server" ClientIDMode="Static" CssClass="multlineInput" TextMode="MultiLine" Text=''></asp:TextBox>*
</div>
<div class="blockGroup">
<div>Vakansiya sayı</div>
<asp:DropDownList ID="txtVacancyQuantity" runat="server" ClientIDMode="Static">
<asp:ListItem Value="-1">Seçilməyib</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
</asp:DropDownList>
</div>
</div>
</asp:Panel>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<div id="divSaveInfo" style="display:none; width: 100%; float: left">
<asp:UpdatePanel ID="upSaveInfo" runat="server">
<ContentTemplate>
<asp:Panel ID="pnlSaveInfo" runat="server" Visible="false">
<asp:Button ID="btnSave" runat="server" ClientIDMode="Static" Text="Yadda saxla" CssClass="btn-add-ann" OnClick="btnSave_Click" />
<label class="lblValidation">Qeyd olunan sahəni düzgün doldurun</label>
</asp:Panel>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="btnSave" />
</Triggers>
</asp:UpdatePanel>
</div>
<asp:SqlDataSource ID="dsCity" runat="server" ConnectionString="<%$ ConnectionStrings:KARIYERADB %>"
SelectCommand=" SELECT DICTIONARY.NAME, DICTIONARY.ID FROM DICTIONARY WHERE DICTIONARY.TYPEID = 3 AND DICTIONARY.ACTIVE <> 0 UNION SELECT N'Seçilməyib', -1 "></asp:SqlDataSource>
<asp:SqlDataSource ID="dsEducationLevel" runat="server" ConnectionString="<%$ ConnectionStrings:KARIYERADB %>"
SelectCommand="SELECT DICTIONARY.NAME, DICTIONARY.ID FROM DICTIONARY
WHERE (DICTIONARY.TYPEID = 5) AND (DICTIONARY.ACTIVE != 0) UNION SELECT N'Seçilməyib', -1 "></asp:SqlDataSource>
<asp:SqlDataSource ID="dsJobType" runat="server" ConnectionString="<%$ ConnectionStrings:KARIYERADB %>"
SelectCommand="SELECT DICTIONARY.NAME, DICTIONARY.ID FROM DICTIONARY
WHERE (DICTIONARY.TYPEID = 2) AND (DICTIONARY.ACTIVE != 0) UNION SELECT N'Seçilməyib', -1 "></asp:SqlDataSource>
<asp:SqlDataSource ID="dsSex" runat="server" ConnectionString="<%$ ConnectionStrings:KARIYERADB %>"
SelectCommand="SELECT DICTIONARY.NAME, DICTIONARY.ID FROM DICTIONARY
WHERE (DICTIONARY.TYPEID = 4) AND (DICTIONARY.ACTIVE != 0) UNION SELECT N'Seçilməyib', -1 "></asp:SqlDataSource>
</asp:Content>
答案 0 :(得分：0)
怎么样：
var subs = $('#lblSubSector').text();
$('#txtSubSector').append('<option value="' + subs + '">Volvo</option>');
<强>更新
然后，我认为这是因为您在为options项生成select之前尝试设置该值。假设您有一个名为BindOptionsFunction的函数来生成选项，您可以这样做：
$.when( BindOptionsFunction ).done(function() {
var subs = $('#lblSubSector').text();
$('#txtSubSector').val(subs);
});