createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(220, 10, 120);

​

  if (mouseIsPressed) {

    fill(255);

  } else {

    fill(0);

  }

​

  // this does the same as the above using a "ternary" statement

  fill(mouseIsPressed ? 255 : 0);

​

  ellipse(width / 2, height / 2, 100);

}

​