如何使用javascript获取gridview中textbox的值 [英] how to get value of textbox in gridview with javascript

问题描述

我想在gridview的templateview中获取textbox的值。但我的脚本不起作用。我的代码如下。谢谢



< asp：TemplateField HeaderText =ExamType>

< edititemtemplate>

< ; asp：DropDownList Width =80pxID =txtExamTypeonChange =check_grade（）MaxLength =20runat =server>

< asp：ListItem Value =选中=真> - 选择

< asp：ListItem> SSCE

< asp：ListItem> WASSCE



< asp：RequiredFieldValidator ID =rfvtxtExamTyperunat =serverControlToValidate =txtExamTypeText =*ForeColor =RedValidationGroup =validaiton/>



< itemtemplate>

< asp：Label ID =lblExamTyperunat =serverText ='<％＃Eval（ExamType） ％>'/>



< footertemplate>



< asp：DropDownList Width = 80pxID =txtftrExamTypeonChange =c heck_grade1（）MaxLength =20runat =server>

< asp：ListItem Value =Selected =True> - 选择

< asp：ListItem> SSCE

< asp：ListItem> WASSCE



< asp：RequiredFieldValidator ID =rfvExamTyperunat =serverControlToValidate =txtftrExamTypeText =*ForeColor =RedValidationGroup =validaiton/>









< script>

function check_grade（）{

document.getElementById（'<％ #Container.FindControl（txtGrade）。ClientID％>'）。innerHTML =;

var ExamType = $（'<％＃Container.FindControl（txtExamType）。ClientID％>'）。val（）;



};

< / script>

I want to get the value of textbox in the templateview of a gridview. But the script i have is not working. My codes are below. Thanks

<asp:TemplateField HeaderText="ExamType">
<edititemtemplate>
<asp:DropDownList Width="80px" ID="txtExamType" onChange="check_grade()" MaxLength="20" runat="server">
<asp:ListItem Value=" " Selected="True">--Select
<asp:ListItem>SSCE
<asp:ListItem>WASSCE

<asp:RequiredFieldValidator ID="rfvtxtExamType" runat="server" ControlToValidate="txtExamType" Text="*" ForeColor="Red" ValidationGroup="validaiton" />

<itemtemplate>
<asp:Label ID="lblExamType" runat="server" Text='<%#Eval("ExamType") %>' />

<footertemplate>

<asp:DropDownList Width="80px" ID="txtftrExamType" onChange="check_grade1()" MaxLength="20" runat="server">
<asp:ListItem Value=" " Selected="True">--Select
<asp:ListItem>SSCE
<asp:ListItem>WASSCE

<asp:RequiredFieldValidator ID="rfvExamType" runat="server" ControlToValidate="txtftrExamType" Text="*" ForeColor="Red" ValidationGroup="validaiton" />




<script>
function check_grade() {
document.getElementById('<%# Container.FindControl("txtGrade").ClientID %>').innerHTML = "";
var ExamType = $('<%# Container.FindControl("txtExamType").ClientID %>').val();

};
</script>

推荐答案

（' <％#Container.FindControl（txtExamType）。ClientID％>'）。val（）;



};

< / script>

('<%# Container.FindControl("txtExamType").ClientID %>').val();

};
</script>

下面会工作



更改以下

Below will work

Change the below

<asp:DropDownList Width="80px" ID="txtftrExamType" onChange="check_grade1()" MaxLength="20" runat="server">

要

To

<asp:DropDownList Width="80px" ID="txtftrExamType" onChange="check_grade1('<%# Container.FindControl("txtGrade").ClientID %>','<%# Container.FindControl("txtExamType").ClientID %>' )" MaxLength="20" runat="server">

并更改以下Java脚本





function check_grade（）{

document.getElementById（'& lt;％#Container.FindControl（txtGrade）。ClientID％& amp; ; gt;'）。innerHTML =;

var ExamType =

and change the below Java script


function check_grade() {
document.getElementById('&lt;%# Container.FindControl("txtGrade").ClientID %&gt;').innerHTML = "";
var ExamType =

（'& lt;％#Container.FindControl（txtExamType）。ClientID％& gt;'）。val（ ）;



};





TO



< script>

function check_grade（gradeTextBox，emailTypeTextBox）{

document.getElementById（gradeTextBox）.innerHTML =;

var ExamType =

('&lt;%# Container.FindControl("txtExamType").ClientID %&gt;').val();

};


TO

<script>
function check_grade(gradeTextBox, emailTypeTextBox) {
document.getElementById(gradeTextBox).innerHTML = "";
var ExamType =

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