Hoopty is an AJAX-like external JavaScript loader with the much more 'sane' security policy requiring only that URL match document.domain.
The common AJAX loader functions XMLHttpRequest and Microsoft.XMLHTTP
are too restrictive (IMHO) in their security rules. They require the
whole hostname of your external source URL to match (chapter and verse)
the hostname of your current page. Hoopty only requires you to match
document.domain, which you can set to be as least restrictive as
foo.com.
Hoopty is very simple to use (you may have noticed that across all my tools). It consists of a single function:
loadJavaScript(url, callback)
where:
url is the external JavaScript you want to load
callback (optional) is the function you want hoopty to call once the JavaScript has loaded