function formataData(data) {
    let partes = data.split(/[-_.]/);
    let dataFormatada = partes.join("/");
    return dataFormatada;
}

// Testes
console.log(formataData("25_12_2026"));
console.log(formataData("25-12-2026"));
console.log(formataData("25.12.2026"));