jQuery $(document).ready? and UpdatePanels - some issues

Question

I have referenced this existing query here regarding jQuery $(document).ready? and UpdatePanels

I am getting a Javascript error on line...

var prm = Sys.WebForms.PageRequestManager.getInstance();

The error is :

Microsoft JScript runtime error: 'Sys' is undefined

Any resolution for this? What could I be missing?

Answer 1

Make sure the ASP.NET ScriptManager control is above your Javascript. It could very easily be that you're calling Sys.WebForms.PageRequestManager before it's been loaded.

Answer 2

Taking this a step further from what Paperjam wrote.

var prm;

$(document).ready(function(){
    prm = Sys.WebForms.PageRequestManager.getInstance();
});

That will avoid trying to reference Sys before it exists. If that doesn't work it could be something else entirely.

Answer 3

Make sure your page contains the following:

<asp:scriptmanager runat="server" />