createCanvas(windowWidth, windowHeight);

  noLoop();

}

​

let maxCount = 50;

​

function draw() {

  background(220, 10, 100);

​

  // draw 50 squares

  for (let counter = 0; counter < maxCount; counter += 1) {

    let d = random(10, 20);

    let x = random(width);

    let y = random(height);

    rect(x, y, d);

  }

}

​