What arguments are supplied to the function inside an ajax .done?

Question

The arguments for .done() and .fail() are the same as the arguments for the corresponding success: and error: parameters for the $.ajax() function, namely:

.done( function(data, textStatus, jqXHR) { ... } );

and

.fail( function(jqXHR, textStatus, errorThrown) { ... } );

For the purposes of typescript, textStatus and errorThrown are strings, jqXHR is an Object, and data depends on what the remote server sends you.

The three parameters passed to the done handler are:

data, textStatus, jqXHR

You can read more here: http://api.jquery.com/jQuery.ajax/

1. data is the response message
2. textStatus will always be success in the done function
3. jqXHR is the raw XMLHttpRequest

Check this out:

Methods (part of jqXHR and Deferred implementations, shown here for clarity only)

 .ajax().always(function(a, textStatus, b){});

Replaces method .complete() which was deprecated in jQuery 1.8. In response to successful transaction, arguments are same as .done() (ie. a = data, b = jqXHR) and for failed transactions the arguments are same as .fail() (ie. a = jqXHR, b = errorThrown). This is an alternative construct for the complete callback function above. Refer to deferred.always() for implementation details.

    .ajax().done(function(data, textStatus, jqXHR){});

Replaces method .success() which was deprecated in jQuery 1.8. This is an alternative construct for the success callback function above. Refer to deferred.done() for implementation details.

    .ajax().fail(function(jqXHR, textStatus, errorThrown){});

Replaces method .error() which was deprecated in jQuery 1.8. This is an alternative construct for the complete callback function above. Refer to deferred.fail() for implementation details.

    .ajax().then(function(data, textStatus, jqXHR){}, function(jqXHR, textStatus, errorThrown){});

Incorporates the functionality of .done() and .fail() methods. Refer to deferred.then() for implementation details.

    .ajax().pipe(function(data, textStatus, jqXHR){}, function(jqXHR, textStatus, errorThrown){});

Incorporates the functionality of .done() and .fail() methods, allowing the underlying Promise to be manipulated. Refer to deferred.pipe() for implementation details.