// Press enter on the canvas to go fullscreen

​

function setup() {

  createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(220);

  fill(40);

  rect(200, 200, 100);

}

​

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}

​

function toggleFullScreen() {

  if (!document.fullscreenElement) {

    document.documentElement.requestFullscreen();

  } else if (document.exitFullscreen) {

    document.exitFullscreen();

  }

}

​

document.addEventListener(

  'keydown',

  (e) => {

    if (e.key === 'Enter') {

      toggleFullScreen();

    }

  },

  false,

);