The Concise Binary Object Representation (CBOR) data format (RFC 7049) implemented in pure JavaScript.

The CBOR-object provides the following two functions:

CBOR.decode(data)

Take the ArrayBuffer object data and return it decoded as a JavaScript object.

CBOR.encode(data)

Take the JavaScript object data and return it encoded as a ArrayBuffer object.

Include cbor.js in your or HTML page:

<script src="path/to/cbor.js" type="text/javascript"></script>

Then you can use it via the CBOR-object in your code:

var initial = { Hello: "World" };
var encoded = CBOR.encode(initial);
var decoded = CBOR.decode(encoded);

After running this example initial and decoded represent the same value.

The API was designed to play well with the WebSocket object in the browser:

var websocket = new WebSocket(url);
websocket.binaryType = "arraybuffer";
...
websocket.onmessage = function(event) {
  var message = CBOR.decode(event.data);
};
...
websocket.send(CBOR.encode(message));