Classification
At present, there is no formal classification for Indonesian slang language as it is essentially a manipulated and popularized form of the Indonesian (the national language of Indonesia).
Indonesian is part of the Western Malayo-Polynesian subgroup of the Malayo-Polynesian branch of the Austronesian languages. According to the Ethnologue, Indonesian is modelled after Riau Malay, a form of Old Malay originally spoken in Northeast Sumatra.
Read more about this topic: Indonesian Slang