Rects Variable

let w = 50;

let h = 50;

​

function setup() {

  createCanvas(874, 620);

  background(255);

  rectMode(CENTER);

}

​

function draw() {

  rect(50, height/2, w, h);

  rect(125, height/2, w, h);

  rect(200, height/2, w, h);

  rect(275, height/2, w, h);

  rect(350, height/2, w, h);

  rect(425, height/2, w, h);

  rect(500, height/2, w, h);

  rect(575, height/2, w, h);

  rect(650, height/2, w, h);

  rect(725, height/2, w, h);

  rect(800, height/2, w, h);

}