JavaScript Error Types
JavaScript errors come in different forms, each requiring specific handling approaches for effective tracking.
Synchronous Errors
window.addEventListener('error', function(event) {
console.log('Error caught:', event.error);
// Send to tracking service
});These are the most common JavaScript errors, caught using the global error handler:
Asynchronous Errors
window.addEventListener('unhandledrejection', function(event) {
console.log('Unhandled promise rejection:', event.reason);
// Send to tracking service
});Promise rejections and async operations require special handling:
Framework-Specific Considerations
Different JavaScript frameworks have specific error handling patterns:
React Error Boundaries
class ErrorBoundary extends React.Component {
constructor(props) {
super(props);
this.state = { hasError: false };
}
static getDerivedStateFromError(error) {
return { hasError: true };
}
componentDidCatch(error, errorInfo) {
// Send error to tracking service
console.log('Error caught by boundary:', error, errorInfo);
}
}React applications should use Error Boundaries to catch component errors:
Source Maps Integration
For production applications, integrate source maps to get meaningful stack traces from minified code.