Array handling in JS

[Timo Mikkolainen]

I'm trying to read the input channels of a vsl object in JS, but I
don't know how to read the 'arrays' the JS functions return. I've
tried foo[0], foo.length, foo.head and whatnot; nothing works. The
arrays are returned by GetInputTypes(), GetInputChannels(), etc in
r3matprp.js.