Targeting span w/ special characters & appended input classes inside

Targeting span w/ special characters & appended input classes inside

I have some forms and inputs that are appended to a span.  I'm trying to target the span's id and it has special characters in it '~~' & then get all the appended inputs inside of it (var fileupload).
Not sure if it's the characters or the appending causing the problem.  How can I target the inputs?