How do I handle errors in React Query?

How do I handle errors in React Query?

In React Query, you can handle errors using the onError callback in your query options.

Can you show me an example of using onError?

Sure! Here's a simple example:

const { data, error } = useQuery('dataKey', fetchData, {
  onError: (error) => {
    console.error('Error fetching data:', error);
  },
});

This will log the error to the console if the fetch fails.

What if I want to display an error message to the user?

You can use the error object returned by useQuery to conditionally render an error message in your component.

Thanks! Is there a way to retry the query on error?

Yes! You can use the retry option in your query. By default, it retries 3 times. You can customize it as needed.