var positionsStepped = document.getElementById('pips-positions-stepped');

noUiSlider.create(positionsStepped, {
    range: range_all_sliders,
    start: 0,
    pips: {
        mode: 'positions',
        values: [0, 25, 50, 75, 100],
        density: 4,
        stepped: true
    }
});