code: function() {
              var arg = arguments,
                  target = [],
                  flag,
                  ln = arg.length;
  
              if (ln == 1) {
                  target = arg[0];
              } else {
                  for (var j = 0, aryLn = arg[0].length; j < aryLn; j++) {
                      var elm = arg[0][j];
                      flag = 1;
                      for (var i = 1; i < ln; i++) {
                          if (jsonQ.index(arg[i], elm) == -1) {
                              flag = 0;
                              break;
                          }
                      }
                      if (flag == 1) {
                          target.push(elm);
                      }
  
                  }
              }
              return target;
          }
docs: return intersection of array in new array