<script>
var pantalla = document.querySelector("canvas"); var pincel = pantalla.getContext("2d");
pincel.fillStyle = "purple" pincel.fillRect(0,0,600,400);
pincel.fillStyle = "pink" pincel.fillRect(0,0,400,400);
pincel.fillStyle = "green" pincel.fillRect(0,0,200,400);
pincel.fillStyle = "yellow"; pincel.beginPath(); pincel.moveTo(300,200); pincel.lineTo(200,400); pincel.lineTo(400,400); pincel.fill();
pincel.fillStyle = "orange"; pincel.beginPath(); pincel.arc(300,200,50,0,2*3.14); pincel.fill();
</script>