createCanvas(400, 400);

background(220);

}

​

function draw() {

  let pos =0;

  stroke(0);

  noFill();

  ellipse(10,10,40,40)

    if(mouseX<30 && mouseX >10 && mouseY <30 && mouseY >10 && mouseIsPressed)

    {

      background(220);

    }

  while(pos<width+50)

    {

      stroke(random(255), random(25),random(255))

      fill(random(255), random(25),random(255))

      rect(mouseX,mouseY, 20,10)

      //quad(mouseX, mouseY, mouseX+10, mouseY +10, mouseX, mouseY+10, mouseX +10, mouseY)

      //ellipse(mouseX,mouseY,50);

      pos = pos + 50;

    }

}