如何在调用jquery ajax成功之前调用自定义函数？

Question

I am working on a mobile app that uses jQuery and BackboneJS. Most of the ajax calls are done using jQuery's native $.ajax function and some are done using Backbone's fetch() and save() functions. Now I understand that Backbone too, at a low level, calls jQuery's $.ajax function for xhr requests. What I want to know is, how can I perform some computation on my response (received from ajax calls) before actually calling the success handler?

So what I want to know is, is there some way I can extend some jquery function such that it will execute the custom code I want, before calling the ajax success handler?

Answer 1

Use global Ajax events: http://api.jquery.com/Ajax_Events/

$(document).bind("ajaxSuccess", function(){
// code here
 }).bind("ajaxComplete", function(){
// code here
 });

However, I'm not sure about the event order, I didn't find you is the event precedence between local and global handlers.