Handling AJAX Errors and Success
Implement robust error handling mechanisms with .fail() and .always() callbacks, and process successful data retrieval with .done() for resilient applications.
Handling Async Outcomes
When you make an AJAX request, it's an asynchronous operation. This means your code doesn't wait for the server's response; it continues executing other tasks.
To handle the server's reply (or lack thereof), jQuery provides special methods called callbacks. These functions run only when certain events occur, like success or failure.
When Everything Goes Right
The .done() callback is your go-to for handling successful AJAX requests. It executes when the server responds with a status code indicating success (typically 200-299).
- It receives the data returned from the server.
- It's the perfect place to update your UI with fresh information.
All lessons in this course
- Configuring AJAX Requests Effectively
- Handling AJAX Errors and Success
- Cross-Domain AJAX (CORS/JSONP)