Troubles with Ajax $get

[hk proj]

Hi, I'm having troubles with $get.
I have a <asp:HiddenField> on my page and I want to read its value using Javascript.
the HiddenField's ID is 'reloadUrl'. I  tried the following methods:
var control = $get("reloadUrl");
var control = $get("<%= reloadUrl.ClientID %>");
var control = $get("<%= this.reloadUrl.ClientID %>");
But all of them return the following message: "$get(...) is null"

My page is a content page and the HiddenField is nested in two or three controls.
What can I do?

PS: I have a RadAjaxManagerProxy on my content page and a RadAjaxManager & ScriptManager on my master page.
May be I have to use another function provided my RadAjaxManager..?

[hk proj]

I also tried to use $get with Telerik products, but nothing happened.
Can you help me? It's urgent.

[SamJ]

HI,

$get() is the right method to access server controls. And for the Telerik controls use the $find() method.
Could you specify where is the javascript code situated, when it is called and how are the controls loaded? You can try getting reference with $get() to a control client-side object in the content page, not in the user control and see if it works.

[hk proj]

I tried the $find method and the $get method with telerik controls and with asp controls.

I used the javascript code in FireBug (a firefox extension that provides a js shell) and in the address bar using javascript:alert($get("..."));

But nothing happens, I only get the result 'null'; I also tried to insert the javascript code in a function and call it... but the result is always null.

The only thing to note is that the $get method works with client-side controls (for example <input id="test" type="..." />) but doesn't work with $find.

What can I do?

[SamJ]

Hi,

I am not sure if you can use the %get() method the way you did. However, if you try the below javascript, you will see how it works:

<script type="text/javascript">
function pageLoad()
{
    var hidden = $get("<%= reloadUrl.ClientID %>");
    alert(hidden.value);
    var telerikControl = $find("<%= RadTextBox1.ClientID %>");
    alert(telerikControl);
}
</script>

<telerik:RadTextBox ID="RadTextBox1" runat="server" />