Johnson posted

Should I use .done() and .fail() for jQuery AJAX

jabber
answered Apr 28 '23 00:00

Yes, it is recommended to use the . done () and . fail () methods for handling jQuery AJAX requests instead of using the success and error callbacks directly.

The .done() and .fail() methods were introduced in jQuery 1.5 as part of the Deferred Object API, which provides a consistent way to manage asynchronous operations in JavaScript. When you make an AJAX request with jQuery, it returns a Deferred Object that you can use to manage the request's state and callbacks.

Here's an example of how to use the .done() and .fail() methods:


$.ajax({
  url: '/path/to/your/api',
  type: 'POST',
  data: { /* your data */ }
})
.done(function(response) {
  // Handle successful response here
})
.fail(function(jqXHR, textStatus, errorThrown) {
  // Handle error case here
});

In this example, the .done() method is called when the AJAX request succeeds and the . fail () method is called when the request fails. These methods provide a more concise and flexible way to handle AJAX responses, and they also allow you to chain multiple callbacks together if needed.

It's worth noting that the .done() and .fail() methods are actually shorthand methods for the . then () method, which allows you to specify both success and error callbacks in a single chain. So if you need to specify both success and error callbacks, you can use the . then () method instead:


$.ajax({
  url: '/path/to/your/api',
  type: 'POST',
  data: { /* your data */ }
})
.then(function(response) {
  // Handle successful response here
}, function(jqXHR, textStatus, errorThrown) {
  // Handle error case here
});

In summary, while using the success and error callbacks directly is still supported in jQuery AJAX, using the .done() and .fail() methods (or . then ()) provides a more modern and flexible way to manage AJAX responses.

Edit Answer

Johnson posted

Should I use .done() and .fail() for jQuery AJAX

jabber answered Apr 28 '23 00:00

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jabber
answered Apr 28 '23 00:00