$find("radTxtB"); at window.onload doesn't work

[Fabiano Damasceno]

Hi,

If I run the jscript function [Disable] on a button click, it works perfect, but, when this function is called by the window.onload, I get a error. The error ocorre because $find doesn't return a valid object, instead, it return a null. Why this happen? There is a way to work around it?

window.onload = function()
{
   Disable();
}

function Disable()
{
  var txt = $find("RadTextBox1");
  txt.disable();
}

[Shinu]

Hello Fabiano,


Use the default pageLoad() method rather than window.onload. The cause of the problem is the control is not rendered on page when calling the window.onload method. The pageLoad fires only after all the ajaxified controls rendered on page.

function pageLoad()
{
   Disable();
}

function Disable()
{
  var txt = $find("RadTextBox1");
  txt.disable();
}

-Shinu.

[Fabiano Damasceno]

Thanks for the tip Shinu, it works fine. :)

[Dimo]

Hi Fabiano,

I recommend you the following page:

http://blogs.telerik.com/dimodimov/posts/08-12-13/don_t_use_body_onload_in_asp_net_ajax_websites.aspx

All the best,
Dimo
the Telerik team