function clearContent(elementID) {
    //console.log("Remove " + elementID);
    document.getElementById(elementID).innerHTML = "";
}
// gestione qrcode... da https://docs.microsoft.com/en-us/aspnet/core/security/authentication/identity-enable-qrcodes?view=aspnetcore-5.0
//var qrcode = new QRCode("qrCodeImg");
function displayQr(elementName, rawData) {
    //console.log("Add " + elementName);
    try {
        if (elementName != "" && rawData != "") {
            qrcode = new QRCode(document.getElementById(elementName),
                {
                    text: rawData,
                    width: 200,
                    height: 200
                });
        }
    }
    catch
    { }
}