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Asked: 2026-05-17T19:57:30+00:00

I’m trying to understand the following code block and am a bit stumped.. specifically

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I’m trying to understand the following code block and am a bit stumped.. specifically I’m confused as to what the YAHOO.example.XHR_JSON = part is about. It looks like we’re creating an anonymous method that creates a named anonymous method?

YAHOO.util.Event.addListener(window, "load", function() {
    YAHOO.example.XHR_JSON = function() { (blah blah blah) };

If I try changing the YAHOO.exmaple.XHR_JSON to something like FooBar and I get told that foobar is not defined.

Any help is as always greatly appreciated..

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1 Answer

  1. Editorial Team

    XHR_JSON is just a property of the YAHOO.example object. You can assign anything to this property, including a function.

    If you tried the following:

    YAHOO.util.Event.addListener(window, "load", function() {
    YAHOO.example.XHR_JSON = 'foobar';
});

    .. then YAHOO.example.XHR_JSON will be set to 'foobar' eventually, but only after the load event has fired. That is probably why you got undefined when you checked for the value.

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