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$ curl repovive.com/roadmaps/javascript/error-handling/checking-error-types

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$ curl repovive.com/roadmaps/javascript/error-handling/checking-error-types

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Checking Error Types - Error Handling | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Checking Error Types

Handle errors differently by type

Use instanceof to check error types and handle each appropriately.

try {
  processInput(data);
} catch (error) {
  if (error instanceof ValidationError) {
    showFieldError(error.field);
  } else if (error instanceof NetworkError) {
    showRetryButton();
  } else {
    throw error; // Unknown error, rethrow
  }
}