//for in

//for of

//while

//do while

​

​

let colors = {

  red: "#ff0000", 

  green: "#00ff00", 

  blue: "#0000ff", 

}

​

​

class CircleClass {

  constructor(x,y,radius) {

    this.x = x;

    this.y = y;

    this.radius = radius;

  }

  paint() {

    circle(this.x,this.y,2*this.radius);

  }

}

​

let circles = [];

​

function setup() {

  createCanvas(600, 600);

  background(220);

  let i=0;

  for (let i=0;i<100;i++) {

    let x = random(width)

    let c = new CircleClass(x,random(height),50);

    circles.push(c);

    i++;

  }

  for (let i in circles) {

    fill(random(255),random(255),random(255));

    circles[i].paint();

  }

}

​

function draw() {

  //background(220);

}