​

let sketch1 = function(k){

  // all p5 functions need to be prefixed with initial letter

  k.setup = function() {

    k.createCanvas(400, 400);

    k.fill(255,255,0);

  }

  k.draw = function() {

    //grey background

    k.background(220);

    k.ellipse(k.mouseX,k.mouseY,50,50);

  }

}

​

// each sketch needs a new variable name and initial letter

​

let sketch2 = function(p){

  p.setup = function() {

    p.createCanvas(400, 400);

    p.fill(0,255,255);

  }

​

  p.draw = function() {

    // red background

    p.background(220,0,0);

    p.ellipse(p.mouseX,p.mouseY,50,50);

  }

}

​

​

// each sketch created in global scope by using new p5();

​

let myp5_1 = new p5(sketch1);

​

let myp5_2 = new p5(sketch2);