As mentioned in What is the current element in Javascript?, the current
element is also the last
element, at the time of execution.
The answer also applies to your case, since the load of the external script is not deferred (through the async
or defer
attribute).
var scriptTag = document.getElementsByTagName('script');
scriptTag = scriptTag[scriptTag.length - 1];
var parentTag = scriptTag.parentNode;
Most browsers (even IE6) support document.scripts. Firefox supports this object as of version 9. So, the following code can also be used:
var scriptTag = document.scripts[document.scripts.length - 1];
var parentTag = scriptTag.parentNode;