Troubleshooting and Debugging

This outline covers strategies and methods for troubleshooting and debugging Edge Apps. It focuses on logging, tracing, and error handling.

Logging

Logging is essential for debugging Edge Apps. It helps you track the flow of your code, identify potential issues, and diagnose errors. Edge Apps leverage the browser’s built-in console object for logging.

Example:

// Log a message to the console
          console.log("This is a log message");
          
          // Log an error message
          console.error("An error occurred");
          
          // Log a warning message
          console.warn("This is a warning message");
          

For more details on logging options, refer to the MDN Web Docs on the console object.

Tracing

Tracing provides a detailed view of the execution flow of your code. You can use tracing to track requests, responses, and other relevant information. Edge Apps offer tracing capabilities through the browser’s built-in Performance API.

Example:

// Start a performance measurement
          const performanceEntry = performance.now();
          
          // Perform some code execution
          
          // Stop the performance measurement
          const performanceExit = performance.now();
          
          // Log the execution time
          console.log(`Execution time: ${performanceExit - performanceEntry} ms`);
          

To learn more about tracing in the browser, explore the MDN Web Docs on the Performance API.

Error Handling

Error handling is crucial for building robust Edge Apps. It ensures that your application gracefully handles unexpected events and prevents crashes. Edge Apps employ try...catch blocks for error handling.

Example:

try {
            // Code that may throw an error
            // ...
          } catch (error) {
            // Handle the error
            console.error("An error occurred:", error);
          }
          

To understand more about error handling in JavaScript, visit the MDN Web Docs on try…catch statements.