A simple API for a poller.

pollerapi.js

var poller  = new Poller('linescore.json', 15000);

// called when new data is received.
// not called when the same data is returned twice in a row
poller.on('update', function( data ) {
  console.log( data );
});

// called on an AJAX error. Polling automatically stops.
poller.on('error', function( error ) {
	console.log(error);
});

// called after every poll
poller.on('poll', function( data ) {
	console.log(data);
});

poller.stop();
poller.start();

@dimak