html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

var chart;

anychart.onDocumentReady(function () {

    chart = anychart.gauges.circular([{value: 7.5}]);

    chart.axis();

    chart.needle();

    chart.title('Save chart as Excel file');

    chart.container('container');

    chart.draw();

});

​

function saveAsXlsx() {

​

    // Save into Excel file.

    chart.saveAsXlsx('raw', 'ExcelData');

}