gistfile1.js

function callbackHandler(response) {
   switch (response.status) {
       case 201:
           // WOO HOO!
           // response.data.uri == uri of the card or bank account resource
           break;
       case 400:
           // missing field - check response.error for details
           break;
       case 402:
           // we couldn't authorize the buyer's credit card
           // check response.error for details
           break
       case 404:
           // your marketplace URI is incorrect
           break;
       case 500:
           // Balanced did something bad, please retry the request
           break;
   }
}