Aggiunta helper js x qrcode

MP.Land/Pages/_Host.cshtml

@@ -50,9 +50,10 @@
 
     <script src="font-awesome/js/all.min.js"></script>
     <script src="_framework/blazor.server.js"></script>
-
+    
     <script type="text/javascript" src="~/lib/qrcode.js"></script>
-    <script type="text/javascript">
+    <script type="text/javascript" src="~/lib/qrHelper.js"></script>
+    @*<script type="text/javascript">
         function clearContent(elementID) {
             console.log(elementID);
             document.getElementById(elementID).innerHTML = "";
@@ -77,6 +78,6 @@
             catch
             { }
         }
-    </script>
+    </script>*@
 </body>
 </html>

MP.Land/wwwroot/lib/qrHelper.js

@@ -0,0 +1,24 @@
+function clearContent(elementID) {
+    console.log(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(elementName);
+    try {
+        if (elementName != "" && rawData != "") {
+            qrcode = new QRCode(document.getElementById(elementName),
+                {
+                    text: rawData,
+                    width: 200,
+                    height: 200
+                });
+            //qrcode = new QRCode(document.getElementById(elementName));
+            //qrcode.clear();
+            //qrcode.makeCode(rawData);
+        }
+    }
+    catch
+    { }
+}