frameRate

// motion

var diam = 48;
var fr;
var slide_1;
var toggle = 0;

function setup() {
  var cnv = createCanvas(400, 300);
  cnv.position(60, 200);

//                       min, max, val
  slide_1 = createSlider(1, 4*70, 4*30);
  slide_1.position(100, 170);
} //setup

function draw() {
  background(192);

  frameRate(slide_1.value()/4);

  fill(0);
  textFont('Arial');
  textSize(28);
  fr = round(100*frameRate())/100;
  frs = str(fr);
  text('frameRate = ' + frs, 20, 30);

  strokeWeight(1);
  stroke(0);
  if (toggle) {
    fill(0, 255, 255);
  } else {
    fill(255, 0, 0);
  }
  toggle = !toggle;
  ellipse(width/2, height/2, diam, diam);
} //draw