anychart.onDocumentReady(function () {
var dataTable = anychart.data.table();
dataTable.addData(get_dji_daily_short_data());
var mapping = dataTable.mapAs({value: 1});
var chart = anychart.stock();
var series = plot.line(mapping);
var tooltipSettings = series.tooltip();
tooltipSettings.format(function () {
return 'Value is ' + this.value
chart.title('Get and modify tooltip');
chart.container('container');