let angle = 0;

​

function setup() {

  noCanvas();

  for (let i = 0; i < 100; i += 1) {

    sliders[i] = createSlider(0, 255, 50);

    sliders[i].style('color', 'red');

  }

}

​

function draw() {

  let offset = 0;

  for (let i = 0; i < 100; i += 1) {

    let sliderValue = map(sin(angle + offset), -1, 1, 0, 255);

    sliders[i].value(sliderValue);

    offset += 0.25;

  }

  angle += 0.1;

}