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Javascript can't find ComboBox

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ComboBox
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Jesse Lawler
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Jesse Lawler asked on 09 Jun 2010, 08:53 AM
Okay, so despite the fact that I'm following the Telerik example here to the letter...

var combo = <%= RadComboBox1.ClientID %>;
combo.Items[0].Select();

My Javascript function cannot find my RadComboBox, and when I run the Javascript function with this command in it, I get the error "ctl00_SecondLevelBodyContent_TopLevelTabs_CustomerServiceTab_RadComboBox1 is not defined".  What gives?

[For what it's worth, document.getElementById('<%= RadComboBox1.ClientID %>') evaluates to object HTMLDivElement.]

I just want to be able to grab hold of my ComboBox from the client side, and I'm baffled why the seemingly-basic example on the Telerik website is failing for me.  Thanks for your help.

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Kalina
Telerik team
answered on 09 Jun 2010, 10:04 AM
Hi Jesse Lawler,

You can get the RadComboBox client-side object using this JavaScript code:
var combo = $find("<%= RadComboBox1.ClientID %>");

Please note that the article that you follow is related to RadComboBox for ASP.NET.
The corresponding article for RadComboBox for ASP.NET AJAX you can find here.

Greetings,
Kalina
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Jesse Lawler
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answered on 09 Jun 2010, 10:37 AM
This still isn't working for me.  This code...

var CustomerComboBox = $find("<%= CustomersID.ClientID %>");
var item = CustomerComboBox.FindItemByText("");
            
...returns the error CustomerComboBox.FindItemByText is not a function.  The $find() command is returning an object, but whatever object it is doesn't seem to be a Telerik RadComboBox object.  What's going on?

One thing that may be relevant:  The RadComboBox is inside of an <asp:Panel> control.  Could that be messing up Javascript's ability to get a handle on the RadComboBox?

Thanks,

Jesse
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Kalina
Telerik team
answered on 09 Jun 2010, 11:47 AM
Hi Jesse Lawler,

The correct name of the function is "findItemByText".
var combo = $find("<%=RadComboBox1.ClientID %>");
var item = combo.findItemByText("test item");

<telerik:RadComboBox ID="RadComboBox1" runat="server">
    <Items>
        <telerik:RadComboBoxItem Text="test item" Value="1" />
    </Items>
</telerik:RadComboBox>

You can find more details about RadComboBox for ASP.NET AJAX client-side API here.

Best wishes,
Kalina
the Telerik team

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Jesse Lawler
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Kalina
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Jesse Lawler
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