StartupScript (javascript) No Longer Working in Web Form from Master Page

[JRB-Bldr]

I had an ASP.Net web page that was working just fine.

It was successfully executing the Javascript Startupscript that was Registered in my VB.Net Page_Load code with:

ScriptManager.RegisterStartupScript(Me.Page, Page.GetType, "ChangeIconStartUpJavaScript", "startUpScript()", True)​

Now, with a re-design, I have changed the same page to now use a Master Page.

I was told to put the javascript code into to the new Page source as follows:

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
  function startUpScript() {
     // -- some javascript code here ---
   }

   function chkFileSelect() (
      // --- some other javascript code here ---
   )
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <%-- Other page code (non-javascript) here --%>
</asp:Content>

But now NONE of the javascript code works at all. Neither the function startUpScript nor the other function(s).
The non-javascript code works just fine, but the previously working javascript code now no longer works.

What am I doing wrong?

Any advice/suggestions you can offer would be greatly appreciated.

Thanks,
JRB-Bldr

 

[JRB-Bldr]

OK, I found my own answer by looking at the Page's Source Code.

Apparently when the Master Page renders the desired page's content, it appends a prefix to the Content area Object ID's.

Something like: "ContentPlaceHolder1_" + <original Object ID>

So a getElementByID(objName) would never work since the objName was now: "ContentPlaceHolder1_" + objName

Good Luck,
JRB-Bldr

 

[jbenson001]

You can still use your code, just add the attribute ClientIDMode = "Static" to any asp.net control you are referencing in the javascript.