1 [object Null] 2 [object Undefined] 3 [object Arguments] 4 [object Array] 5 [object Boolean] 6 [object Date] 7 [object Function] 8 [object JSON] 9 [object Math] 10 [object Number] 11 [object Object] 12 [object RegExp] 13 [object String] 14 [object Boolean] 15 [object Number] 16 [object String]