[CLOSED] ext:Button: Adding listener to a click event

[supera]

Hi!

I'm creating my ext:window as javascript: It is working.
But, I wish pass the buttons of window as parameter of the function;
I'm creating a function below to create a button. But my problem is: I want set the javascript that be executed when the button is clicked.

In vb.Net, i do this:

function createButton(text as string, fn as string)
     dim btn = New Ext.Net.Button
     btn.Id = "btnOk"
     btn.Text = text
    btn.Listeners.Click.Handler = fn
    return btn
end function

How I do it in Javascript?

        function createButton(text, fn) {
            var btn;

            btn = Ext.create("Ext.button.Button", {
                id: "btn" + text,
                text: text
            });
            btn.on("click", "function () {" + fn + "}");
            return btn;
        }