node.js equivalent of $_server['query_string']

What is node.js equivalent of

    $_SERVER['QUERY_STRING']

and also to put it in:

    list($a,$b,$c ...) = explode('/', $_SERVER['QUERY_STRING']);

See the answer here for how to get the query string: how to get GET (query string) variables in node.js?

Then use querystring.parse() to get an object representing the keys and values in the query string.

http://nodejs.org/api/querystring.html#querystring_querystring_parse_str_sep_eq_options