It seems that the "standard" json parser is happily parsing invalid json as shown below
user=> (require '[clojure.data.json :as j])
nil
user=> (j/read-str "{\"a\": 123,,}")
{"a" 123}
user=> (j/read-str "{\"a\": 123,\"b\",}")
{"a" 123}
I know other libraries exist (eg jsonista, cheshire) but it doesn't look good that what seems to be the "standard" json parser (as per the link on http://json.org/ and the fact that it lives inside the main clojure github org) is broken.
(Logged as https://clojure.atlassian.net/browse/DJSON-29)
