braintree-example.js

var braintree = require("paynode").use("braintree");

var gateway = braintree.connect({
  environment: braintree.Environment.Sandbox,
  merchantId: 'your_merchant_id',
  publicKey: 'your_public_key',
  privateKey: 'your_private_key'
});

gateway.transaction.sale({
    'amount': '5.00',
    'creditCard': {
      'number': '5105105105105100',
      'expirationDate': '05/12'
    }
  },
  function (err, response) {
    // ...
  }
);