JSONP ReferenceError when loaded using PJAX

[bilogic]

Hi,

1. I'm using PJAX to load a bunch of HTML + javascript, let's call this JS-A
2. In JS-A, there is an inline function called parse_jsonp()
3. JS-A also makes a JSONP call using $.ajax with the callback of parse_jsonp
4. However, the $.ajax call returns with an error ReferenceError: parse_jsonp is not defined

$.ajax runs parse_jsonp correctly when the page is loaded normally (non-PJAX).
So the question is, since JS-A (including parse_jsonp()) was loaded by PJAX, why is it undefined when called? Thank you.