code: function (value) {
              var o = this.options, min = o.min, max = o.max;
              this.bar.children().attr({ "aria-valuenow": value });
              if (o.sliderType == "range") {
                  var handles = this._handles();
                  handles.eq(0).attr({ "aria-valuemin": min });
                  handles.eq(1).attr({ "aria-valuemax": max });
  
                  if (this._active == 1) handles.eq(1).attr({ "aria-valuemin": value });
                  else handles.eq(0).attr({ "aria-valuemax": value });
              }
              else this.bar.children().attr({ "aria-valuemin": min, "aria-valuemax": max });
          }
docs: WAI-ARIA support