Use success() or complete() in AJAX call

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Is it that success() returns earlier than complete()?

Yes; the AJAX success() method runs before the complete() method.

Below is a diagram illustrating the process flow:

AJAX call process flow diagram.

It is important to note that

  • The success() (Local Event) is only called if the request was successful (no errors from the server, no errors with the data).

  • On the other hand, the complete() (Local Event) is called regardless of if the request was successful, or not. You will always receive a complete callback, even for synchronous requests.

… more details on AJAX Events here.

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