troubleshooting Question

help with dynamic creation of Javascript

Avatar of HLRosenberger
HLRosenbergerFlag for United States of America asked on
JavaScript.NET ProgrammingASP.NET
6 Comments1 Solution353 ViewsLast Modified:
I'm creating Javascript dynamically, using the ClientScriptManager.  In general, my Javascript works fine.   However, I want to use document.getElementById to get a reference to a control on my page.  This does not work.  I'm using alert to display the variable and it's always null.

Can anyone see an issue with the code below?  What might be wrong?

 Here's a relevant portion of my ASP code:

 <asp:TextBox runat="server" id="xyzreq_item" MaxLength="100" columns="60" cssclass="field_input" rows="2" textmode="MultiLine"></asp:TextBox>

Here's a relevant portion of my VB code-behind code:

Dim scriptText As New StringBuilder()
Dim cs As ClientScriptManager = thePage.ClientScript

scriptText.Append(" var x123 = document.getElementById('<%= xyzreq_item.ClientID %>'); ")

cs.RegisterClientScriptBlock(thePage.GetType, SCRIPTID, scriptText.ToString)

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