code: function() {
              var arg = arguments,
                  target = [],
                  ln = arg.length;
  
              for (var i = 0; i < ln; i++) {
                  var aryLn = arg[i].length;
                  for (var j = 0; j < aryLn; j++) {
                      var itm = arg[i][j];
                      if (jsonQ.index(target, itm) == -1) {
                          target.push(itm);
                      }
                  }
  
              }
              return target;
          }
docs: Return the union of arrays in new array