jQuery ajax() URL is required?

Question

the ajax function's header is: jQuery.ajax( url [, settings ] )

With the documentation saying that URL is required, why in the examples is only 'settings' supplied?

$.ajax({
  type: "GET",
  url: "test.js",
  dataType: "script"
});

Answer 1

Right below that, you'll see the other syntax for $.ajax, where just a settings object is passed, including the URL.

Answer 2

They provide two method signatures

jQuery.ajax( url [, settings ] )

jQuery.ajax( [settings ] )