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]