TradeKing json parsing example - messages may be sent in chunks

tradeking.js

var message  = ""
, first_data = true
// message terminator
// all JSON requests will terminate with }}
, terminator = "}}";

request = consumer.get(url, access_token, access_secret);

request.on("response", function (response) {
  response.setEncoding("utf8");
  response.on("data", function (data) {
    // if first data, ignore it
    // it's of the form {"status":"connected"}
    if (first_data) {
      first_data = false;
    }
    // otherwise continue parsing
    else {
      message += data;
    }

    var terminatorIndex = message.indexOf(terminator);
    var didFindTerminator = terminatorIndex != -1;

    if (didFindTerminator) {
      var tick = message.slice(0, terminatorIndex + 2);
      // handle tick in your code...
      // ...
      // store rest of message (if any)
      message = message.slice(terminatorIndex + 3);
    }
  });
});