docs: function (is_update) {
              this.no_diapason = false;
              this.coords.p_step = this.convertToPercent(this.options.step, true);
  
              this.target = "base";
  
              this.toggleInput();
              this.append();
              this.setMinMax();
  
              if (is_update) {
                  this.force_redraw = true;
                  this.calc(true);
  
                  // callbacks called
                  this.callOnUpdate();
              } else {
                  this.force_redraw = true;
                  this.calc(true);
  
                  // callbacks called
                  this.callOnStart();
              }
  
              this.updateScene();
          }