Question

I have a function:

function someFunction(params) {
//Creates an object
//$.each(collection, funct() { /*do work on collection, essentially pushes items into an array */});

//JSON.stringify(results)

//$.ajax POST...this is what I want $.when to wait for

}

I setup

$.when(someFunction(params)
).then(doNextThing);

I also tried

$.when(function() {someFunction(params) }
).then(doNextThing);

doNextThing is invoked before the callback. Is it possible that $.each or stringify is causing $.when to fail?

Answer 1

someFunction needs to return an object for $.when to work. Otherwise it is the equivalent of someFunction(params);$.when(undefined).then(doNextThing). In this setup doNextThing will never be called.

Since you are waiting on the ajax call, it should look something like this:

function someFunction(params) {
    ...
    return $.ajax(...);
}

$.when(someFunction(params)).then(doNextThing);