track_ticks.js

var autobahn = require('autobahn');
var wsuri = "wss://api.poloniex.com";

var connection = new autobahn.Connection({
	url: wsuri,
	realm: "realm1"
});

connection.onopen = function (session) {
	function tickerEvent (args,kwargs) {
		console.log(args.join(";"));
	}
	session.subscribe('ticker', tickerEvent);
}

connection.open();