Error Handling Strategies in JavaScript
From the Async JavaScript cheat sheet · Abort & Error Handling · verified Jul 2026
Error Handling Strategies
Best practices and patterns for handling errors in asynchronous JavaScript code
javascript
// Try/catch with async/await
async function safe() {
try {
return await riskyOperation();
} catch (error) {
logger.error(error);
return defaultValue;
}
}
// Promise error handling
promise
.then(handleSuccess)
.catch(handleError)
.finally(cleanup);
// Global error handlers
window.addEventListener('unhandledrejection', e => {
console.error('Unhandled promise:', e.reason);
});💡 Always handle promise rejections to avoid unhandled errors
⚠️ Async errors don't bubble up like synchronous errors
✅ Use try-catch with async/await for cleaner error handling
🔄 Consider implementing retry logic for transient failures
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