​

​

function setup() {

  createCanvas(600, 120);

  rectMode(CENTER);

  colorMode(HSB, 360, 100, 100);

  h = 60;

​

}

​

function draw() {

  background(220);

  noStroke();

​

  //for(initialize;condition;increment)

  for (let x = 50; x <= width; x = x + 100) {

    for (let w = 70; w >= 1 ; w = w -10){

    fill(map(w, 70, 1, 0, 360), 100, 100);

    rect(x, h, w, w)

     // h = h +0.1;

    }

​

  }

​

}