Why is my input undefined when I run the program?

Question

https://code.sololearn.com/WunJwFnTnLyW/?ref=app

Answer 1

Well I didn't get the mistake..😅
But the code is Very NiCe!!!

Answer 2

Try
var input = orderform[0].value;

Answer 3

it worked!!but how about the undefindmenu ?

Answer 4

When you hit the submit button in the second lined it says undefined menu.