<meta charset = "UTF-8">
<canvas width="600" height="400"></canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "grey";
pincel.fillRect(0,0,600,400);
function exibirAlerta(evento){
console.log(evento);
alert("Usted hizo un click");
}
pantalla.onclick = exibirAlerta;
</script>
