<meta charset="utf-8">
<input/>
<button>Verificar si acertó el amigo secreto</button>
<script>
var secretos = [3,5,7,9];
var input = document.querySelector("input");
input.focus();
function verificar() {
if (secretos.includes(parseInt(input.value))) {
alert("Usted acertó");
}
else {
alert("Usted erró");
}
input.value ="";
input.focus();
}
var button = document.querySelector("button");
button.onclick = verificar;
</script>
