It might be needed to set the request content-type to XML explicitly. How can you do so for an XMLHttpRequest Object?

Is it always possible to make requests to multiple websites with different domain names from an AJAX client script?

Which status codes denotes a server error?

Which is drawback of AJAX?

Can AJAX be used to move files on the client-side?

Is it possible to create and manipulate an image on the client with AJAX?

A callback function is a function passed as a parameter to another function.

Which is true about callback function?

If $.ajax() is called with the global option set to false, the $.ajaxStart() method will not fire.

AJAX has become very commonly used because

Which option should be set in jQuery AJAX call to send a DOMDocument?