Question

I’m using jQuery ajax to do some requests to the server. I have to add some validations after the content is loaded (error handling). The easiest way is by adding the validation on the success() callback. However, I would need to implement that callback in all the implementations I already have. Is there a way to extend the success callback? Something that will be called before the rest of the callback code? This way I can add the validations for each success in ONE place, and be executed every time a success callback is called.

I tried preFilters, converters, but they don’t fit my needs.

Answer 1

From jQuery.ajax:

As of jQuery 1.5, the success setting can accept an array of functions. Each function will be called in turn.

So, something like this should work

$.ajax(url, {
    success: [
        commonfunction,
        function(...){ /* code */ }
    ],
});

Though you will still have to modify some code.