What are the performance differences between Fetch and AJAX?

What are the performance differences between Fetch and AJAX?

Fetch is generally more efficient than AJAX because it uses Promises, allowing for better handling of asynchronous operations.

Can you explain how Promises improve performance?

Promises allow for non-blocking code execution, meaning multiple operations can run simultaneously without waiting for each to complete.

Are there any scenarios where AJAX might be better?

Yes, AJAX might be preferable in older browsers that do not support Fetch, or when you need to use synchronous requests.

What about error handling in Fetch vs AJAX?

Fetch has a more modern approach to error handling with Promises, while AJAX relies on callback functions, which can be more complex.