Fully qualified name for $find() method

[dingjing]

What is the fully qualified name for $find()?

I can use $find() within other functions without problem. For example,

function FindCombo(idCombo){
    var combo = $find(idCombo);
    combo.set_text("Here I am!");
}

But if I try to use it at top-level, like this:

var MyObject = new Object();
MyObject.combo = $find("MyComboId");

I get "$find not defined" error.

Similar error happens when I try to use shortcut method $get(). I use its fully qualified name (document.getElementById), then it is OK. So I guess if I use $find's full name, it should solve the problem.

[Thomas]

Are you using the ClientID like so:

function FindCombo(idCombo)
{
    var combo = $find("<%=this.MyCombo.ClientID %>");
    combo.set_text("Here I am!");
}

or

var MyObject = new Object();
MyObject.combo = $find("<%=this.MyCombo.ClientID %>");

[dingjing]

If I was not using the correct ID, the error would be using null object, not "$find undefined"

[Thomas]

True. Then my guess would be that there is something amiss with the Ajax Extensions configuration. In other words, there is either something missing from the web.config file or the Extensions are not installed etc.

[dingjing]

I got it.

$find is a shortcut for Sys.Application.findComponent. It can only be used after AJAX library has been loaded.