How to change $.ajax() default settings?

How can I modify the default values of options for the $.ajax() function?

Ideally to do something similar to:

//set ajax async to false
$(someSelector).load(url, data, function(){});
//set ajax async to true

to allow me to carry out .post() synchronous开发者_运维知识库ly.

You want ajaxSetup

 $.ajaxSetup({
   url: "/xmlhttp/",
   global: false,
   type: "POST"

 });
 $.ajax({ data: myData });

Try using $.ajaxSetup()

$.ajaxSetup({
  async: false
});