Ajax requests produce a number of different events that you can subscribe to. Here's a full list
of the events and in what order they are broadcast.
There are two types of events:
These are callbacks that you can subscribe to within the Ajax request object.
// Handle the beforeSend event
// Handle the complete event
These events are broadcast to all elements in the DOM, triggering any handlers which may be
listening. You can listen for these events like so:
Global events can be disabled, for a particular Ajax request, by passing in the global option,
Here is the full list of Ajax events. The ajaxStart and ajaxStop events are events that relate to
all Ajax requests together.
ajaxStart (Global Event)This event is broadcast if an Ajax request is started
and no other Ajax requests are currently running.
beforeSend (Local Event)This event, which is triggered before an Ajax request
is started, allows you to modify the XMLHttpRequest object (setting additional headers,
if need be.)
ajaxSend (Global Event)This global event is also triggered before the request
success (Local Event)This event is only called if the request was successful
(no errors from the server, no errors with the data).
ajaxSuccess (Global Event)This event is also only called if the request was
error (Local Event)This event is only called if an error occurred with the
request (you can never have both an error and a success callback with a request).
ajaxError (Global Event)This global event behaves the same as the local error
complete (Local Event)This event is called regardless of if the request was
successful, or not. You will always receive a complete callback, even for synchronous
ajaxComplete (Global Event)This event behaves the same as the complete event
and will be triggered every time an Ajax request finishes.
ajaxStop (Global Event)This global event is triggered if there are no more Ajax
requests being processed.
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