​

let bubbles = [];

let d;

​

function setup() {

  createCanvas(400, 400);

​

  for (let i = 0; i < 5; i++) {

    bubbles[i] = new Bubble();

  }

​

}

​

function draw() {

  background(220);

​

  for (let i = 0; i < bubbles.length; i++) {

bubbles[i].show();

​

}

}

​

class Bubble {

  constructor() {

    this.x = random(width);

    this.y = random(height);

  }

​

  show() {

    ellipse(this.x, this.y, 20, 20);

  }

}