anychart.onDocumentReady(function () {
var chart = anychart.sparkline([1.3, 2, 1.4, 4, 2.3, 6]);
chart.title({text: 'Click on the chart. You have 3 clicks', orientation: 'top'});
var listenKey = chart.listen('click', customListener);
function customListener(e) {
chart.title('Click on the chart. You have ' + counter + ' clicks');
chart.unlistenByKey(listenKey);
chart.title('You have no more clicks');
chart.container('container');