From the dojo documents on dijit.registry, I see the forEach method accepts a last parameter thisObject. But it doesn't way what that object is. Is it a dijit widget or a dojo object?

I want to destroy all widgets inside an element (that will be replaced by AJAX) so they can be parsed again without conflicting id's.

dijit.registry.forEach(function(w) {
    w.destroyRecursive();
}, dojo.byId("ajaxElement"));

But this destroys ALL widgets on the page...