html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

​

    // create data

    var data = [

      {

        id: "A",

        name: "Location A",

        children: [

          {

            id: "1",

            name: "Server 1",

            periods: [

              {id: "1_1", start: "2018-01-05", end: "2018-01-25"},

              {id: "1_2", start: "2018-01-28", end: "2018-02-22"},

              {id: "1_3", start: "2018-03-03", end: "2018-03-25"}

            ],

            custom_field: "!"

          },

          {

            id: "2",

            name: "Server 2",

            periods: [

              {id: "2_1", start: "2018-01-07", end: "2018-02-15"},

              {id: "2_2", start: "2018-02-26", end: "2018-03-20"}

          ]}

      ]},

      {

        id: "B",

        name: "Location B",

        children: [

          {

            id: "3",

            name: "Server 3",

            periods: [

              {id: "3_1", start: "2018-01-04", end: "2018-03-25"}

            ],

            custom_field: "?"

          }

      ]}

    ];

​

    // create a data tree

    var treeData = anychart.data.tree(data, "as-tree");

​

    // create a chart

    var chart = anychart.ganttResource(); 

    // set the data

    chart.data(treeData); 

​

    // set the text of the first data grid column

    var column_1 = chart.dataGrid().column(0);

    column_1.labels().fontColor("#64b5f6");

    column_1.labels().fontWeight(600);

    column_1.labels().format("{%linearIndex}.");

​

    // set the text of the second data grid column

    var column_2 = chart.dataGrid().column(1);

    column_2.labels().useHtml(true);

    column_2.labels().format(

      "<span style='color:#dd2c00;font-weight:bold'>" +

      "{%custom_field}</span> {%name}"

    );

​

    // set the container id

    chart.container("container");

​

    // initiate drawing the chart

    chart.draw();

​

    // fit elements to the width of the timeline

    chart.fitAll();

});