I have to extract defined variable and function names from a js code passed as a text. Example:
$js_code = " var MyVar1 = 'val1'; \n var MyVar2 = 'val2' ; \n function MyFunc() { some code }";
Extracted:
$js_vars = array("MyVar1", "MyVar2");
$js_func = array("MyFunc");
Have you tried Aptana Jaxer?
It’s an HTTP/Apache javascript parser.
There’s also tools like jParser: http://timwhitlock.info/jparser/
Which is a php library which parses javascript.
That might be more like what you need, but only if you’re using PHP server-side.
I hope that helps.