text: var sliderFormat = document.getElementById('slider-format');
  
  noUiSlider.create(sliderFormat, {
      start: [20],
      step: 10,
      range: {
          'min': [20],
          'max': [80]
      },
      format: {
          to: function (value) {
              return value + ',-';
          },
          from: function (value) {
              return value.replace(',-', '');
          }
      }
  });
  