code: def to_javascript_(self, table_name: str="data") -> str:
          
          try:
              renderer = pytablewriter.JavaScriptTableWriter
              data = self._build_export(renderer, table_name)
              return data
          except Exception as e:
              self.err(e, "Can not convert data to javascript code")
docs: Convert the main dataframe to javascript code
  
          :param table_name: javascript variable name, defaults to "data"
          :param table_name: str, optional
          :return: a javascript constant with the data
          :rtype: str
  
          :example: ``ds.to_javastript_("myconst")``