Multiple attribute based jquery map with join

How to add multiple attribute based selector and

var AllchkIDs = $('input[sid="ChkFlddisp"]').map(function () {
                  var nval = $(this).val();
                  //  alert(nval);
                  var chkid = 'input:checkbox[vid="ChkFlddisp"][value=' + nval + ']';
                  var ischecked = $(chkid).is(':checked');
                  // alert(ischecked);
                  nval += !$(this).is(':checked') ? " ASC" : " DESC";

                  //nval = ischecked ? nval : "";
                  if (ischecked) {
                      return nval
                  }

              }).get().join(',');