html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    // To change the way how context menu looks you need to change CSS.

    // By default CSS from AnyChart CDN is used: https://cdn.anychart.com/releases/8.13.0/css/anychart-ui.min.css

    // Download it, alter, upload to your server and link from your pages to change the look.

​

    var chart = anychart.line([

        {x: 'January', value: 1},

        {x: 'February', value: 2},

        {x: 'March', value: 1.3},

        {x: 'April', value: 2.9}

    ]);

​

    chart.contextMenu().itemsFormatter(function (items) {

​

        // Adding custom item to the top of context menu.

        items['my-custom-item'] = {

            index: 0,

            text: 'Show help info',

            href: 'https://docs.anychart.com/'

        };

​

        // Changing default item.

        items['print-chart'] = {

            text: 'Print this chart',

            action: function () {

                return chart.print();

            }

        };

​

        // Delete item.

        delete items['about'];

​

        return items;

    });

​

    chart.title('Use items formatter to add, change and delete items');

    chart.container('container');

    chart.draw();

});