ajax
Specify the ajax functionality that should be used to make the request.
    function(settings)
  
  Provides an alternate function to be used to make ajax requests. By default [can-util/dom/ajax/ajax] provides the ajax functionality. jQuery's ajax method can be substituted as follows:
connect([
  require("can-connect/data/url/url")
],{
  url: "/things",
  ajax: $.ajax
});
  
  Parameters
- settings 
{Object}:Configuration options for the AJAX request.
 
Returns
 {Promise}: 
A Promise that resolves to the data.