Why does a cross-domain angularjs $http.post request fail when a XMLHttpRequest succeeds?

Question

I am trying to exercise the Trello API with an application key and token from an angular (version 1.0.5) webapp. The server seems correctly configured to handle CORS. A test req

Answer 1

I just ran into a similar issue and the problem was that I was getting the url wrong. I was posting to 1/cards/actions/createCard because I missread the docs. I got an access-control related error even though headers etc. look right. Posting to 1/cards created a card, which is what I wanted.