[Blazor] Logging - comments for "magic numbers" (#32455)

aspnetcore/blazor/fundamentals/logging.md

@@ -704,7 +704,7 @@ Blazor Web App:
  Blazor.start({
  circuit: {
  configureSignalR: function (builder) {
- builder.configureLogging(2);
+ builder.configureLogging(2); // LogLevel.Information
  }
  }
  });
@@ -720,14 +720,17 @@ Blazor Server:
 <script>
  Blazor.start({
  configureSignalR: function (builder) {
- builder.configureLogging(2);
+ builder.configureLogging(2); // LogLevel.Information
  }
  });
 </script>
 ```
 
 In the preceding example, the `{BLAZOR SCRIPT}` placeholder is the Blazor script path and file name. For the location of the script, see <xref:blazor/project-structure#location-of-the-blazor-script>.
 
+> [!NOTE]
+> Using an integer to specify the logging level in Example 2, often referred to as a *magic number* or *magic constant*, is considered a poor coding practice because the integer doesn't clearly identify the logging level when viewing the source code. If minimizing the bytes transferred to the browser is a priority, using an integer might be justified (consider removing the comment in such cases).
+
 For more information on Blazor startup (`Blazor.start()`), see <xref:blazor/fundamentals/startup>.
 
 ## SignalR client logging with app configuration