Difference between $.ajax(); and $.ajaxSetup();

Question

What is the difference between $.ajax(); and $.ajaxSetup(); in jQuery as in:

$.ajax({     cache:false }); 

and

$.ajaxSetup({     cache:true }); 

Also, which one is best option?

Answer 1

The following will prevent all future AJAX requests from being cached, regardless of which jQuery method you use ($.get, $.ajax, etc.)

$(document).ready(function() {   $.ajaxSetup({ cache: false }); }); 

you should use $.ajax, which will allow you to turn caching off for that instance:

$.ajax({url: "myurl", success: myCallback, cache: false}); 

Answer 2

ajaxSetup sets default values to be valid for all ajax requests. After this you don't have to do the same setting in $.ajax

All settings in $.ajax will be valid only for that ajax call.