Topic: Referring to AJAX controls from JavaScript
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Description: When using AJAX and JavaScript, previous JavaScript code that used "getElementByID" may not work with AJAX controls.

Notes: (none)

In order for your JavaScript to recognize controls contained within AJAX controls, such as UpdatePanel, you need to replace code, such as,

This is preferred:


var objExtendermain;
objExtenderMain = $find("<%=cpeMainNavigation.ClientID%>");


but, you can try this, as well:


window.document.getElementById("myControl").value = "SomeValue";


with the new AJAX functions.  Below is an example:


$get("myControl").value = "SomeValue";