javascript/date

// https://msdn.microsoft.com/en-us/library/ff743760(v=vs.94).aspx
https://msdn.microsoft.com/en-us/library/dn342822(v=vs.94).aspx
//var fechanac = new Date(params.fechanac);
//var options = {day: "numeric", month: "2-digit", year: "numeric"};
//$scope.data.fechanac = fechanac.toLocaleDateString("es-PE");
//$scope.data.fechanac = Intl.DateTimeFormat("es-PE", options).format(fechanac);