Is there a better way to do callback chaining in javascript?

Question

I wrote a callback helper, that lets me group multiple callbacks into one function variable:

function chainCallbacks() {
    var callbacks = arguments;
    r         


        

Answer 1

If you want to replace a callback with one that calls the original as well as some others, I'd probably just do something like this:

Requirejs.config.callback = function(orig) {
    var fns = [orig, first, second, third];
    return function() {
        fns.forEach(function(fn) { fn.apply(null, this); }, arguments);
    };
}(Requirejs.config.callback);

---

But if you're doing this often, I think your solution will be as good as it gets. I don't see need for a library.

Requirejs.config.callback = chainCallbacks(Requirejs.config.callback, first, second, third)

A library can't do anything to extend language syntax in JavaScript. It's limited to what's available... no operator overloading or anything.