In real-world applications, things do not always go as planned. Network issues, server errors, or wrong inputs can cause asynchronous tasks to fail.
JavaScript provides several ways to handle these errors safely so your application does not crash and users get proper feedback.
Learning how to handle errors in asynchronous code is essential for building reliable and professional applications.
Ways to Handle Errors in Async Code
- Using catch() with promises
- Using try...catch with async and await
- Showing user-friendly error messages
- Logging errors for debugging
- Preventing application crashes
Good error handling improves both stability and user experience.
Here, the promise fails and the catch() method handles the error.
Instead of stopping the program, the error is caught and handled safely.
The try block contains code that may fail.
If an error occurs, control moves to the catch block where the error is handled.
These examples show how errors can be handled gracefully in asynchronous code.
By mastering async error handling, students gain the ability to build stable, user-friendly, and professional JavaScript applications.