用jquery选择asyncfileupload id没有显示任何内容 [英] Selecting asyncfileupload id with jquery is showing nothing

问题描述

您好我正在尝试选择一个AsyncFileUpload id以便使用JQuery将其保存到数据库中，因此我尝试选择其ID以查看错误但它正在使用空值进行警报。我只需要知道我在某个地方犯了错误。我的代码已关闭。



谢谢



我的尝试：



这里的html部分：



< asp：AsyncFileUpload OnClientUploadError =uploadFileError

runat =serverID =AsyncFileUpload2Width =190pxCssClass =asyncuploadUploadingBackColor =＃CCFFFF

OnClientUploadStarted =OnUploadFileStartOnUploadedComplete =AsyncFileUpload2_UploadedComplete/ >





和我的Jquery选择器：

Hi I am trying to select an AsyncFileUpload id in order to save it into a database using JQuery, so I am trying to select its Id to see what is wrong but it is alerting with an empty value. Please I just need to know I am making a mistake somewhere. My code are down.

Thanks

What I have tried:

Here the html portion:

<asp:AsyncFileUpload OnClientUploadError="uploadFileError"
runat="server" ID="AsyncFileUpload2" Width="190px" CssClass="asyncupload" UploadingBackColor="#CCFFFF"
OnClientUploadStarted="OnUploadFileStart" OnUploadedComplete="AsyncFileUpload2_UploadedComplete" />


and this my Jquery selector:

var pdfname = $('#<%=txtBookTitle.ClientID%>').val();
                var pdfname1 = $('#<%=txtBookDescription.ClientID%>').val();
                var pdfname2 = $('#<%=AsyncFileUpload2.ClientID%>').val();
                alert(pdfname);
                alert(pdfname1);
                alert(pdfname2);

推荐答案

（'＃<％= txtBookTitle.ClientID％>'）。val （）;
var pdfname1 =

('#<%=txtBookTitle.ClientID%>').val(); var pdfname1 =

（'＃<％= txtBookDescription.ClientID％>'）。val（）;
var pdfname2 =

('#<%=txtBookDescription.ClientID%>').val(); var pdfname2 =

（'＃<％= AsyncFileUpload2.ClientID％>'）。val（）;
alert（pdfname）;
alert（pdfname1）;
alert（pdfname2）;

('#<%=AsyncFileUpload2.ClientID%>').val(); alert(pdfname); alert(pdfname1); alert(pdfname2);

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