When I try to Split a string in node I get the following error...

TypeError: Object #

Here is the split code I am using...

var query = req.query;

query.split(",");

I am using express to create my server, it seems like it is looking for a module, but isn't .split() a standard method with node.js?

req.query simply isn't a string; it's an object, created by parsing the query string in req.url into key-value pairs. Therefore it doesn't have a split method, since that's only for strings. If you need the literal text of the query string (like because it's not actually made up of key-value pairs), use url.parse(req.url).query.