Question from the jQuery test

Only the $.ajax(options) method allows you to launch an AJAX request to the server.

It is possible to set the server directly in the request and provide a username and password in the options of the $.ajax() method;

It is possible to “prefilter” the data returned by the server before it is passed to the callback function options.success(response)

When transmitting or retrieving a JSON object, it is always transmitted encoded in UTF-8 implicitly.

In jQuery, any element of the DOM can be informed of AJAX requests in progress without it being affected by these requests.