Error Handling

Errors are feedback. A senior engineer anticipates errors and handles them, ensuring the user never sees a broken page.

The Safety Net (Try/Catch)

javascript

function riskyOperation() {
  if (Math.random() > 0.5) throw new Error("Server Exploded 💥");
  return "Success!";
}

try {
  console.log("Attempting...");
  const result = riskyOperation();
  console.log(result);
} catch (err) {
  // Graceful Handling
  console.log("Caught an error:", err.message);
  console.log("Don't worry, the app is still alive.");
} finally {
  console.log("Cleanup: Closing connection...");
}

The 'Finally' Block

finally runs no matter what. It's perfect for cleaning up (hiding loading spinners, closing files) whether the operation succeeded or failed.

The Safety Net (Try/Catch)

The 'Finally' Block

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