Preview:
function digital() {
    let laHora = new Date();

    let horas = laHora.getHours();

    if (horas < 10) {
        horas = "0" + horas;
    }


    let minutos = laHora.getMinutes();

    if (minutos < 10) {
        minutos = "0" + minutos;
    }


    let segundos = laHora.getSeconds();

    if (segundos < 10) {
        segundos = "0" + segundos;
    }


    const reloj = `<aside id="relojillo"><h1>${horas} : </h1> <h2>${minutos}</h2><sup><h3> : ${segundos}</h3></sup></aside>`;

    const salida = document.getElementById("elReloj").innerHTML = reloj;

    setTimeout(digital, 1000);


    return salida;
}
digital();
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