Change

<div id="gantt"></div>
<script>
$("#gantt").kendoGantt({
  dataSource: [
    {
      id: 1,
      orderId: 0,
      parentId: null,
      title: "Task1",
      start: new Date("2014/6/17 9:00"),
      end: new Date("2014/6/17 11:00")
    },
    {
      id: 2,
      orderId: 1,
      parentId: null,
      title: "Task2",
      start: new Date("2014/6/17 12:00"),
      end: new Date("2014/6/17 14:00")
    }
  ],
  change: function(e) {
    var selection = this.select();
    var task;

    if (selection) {
      task = this.dataItem(selection);
/* The result can be observed in the DevTools(F12) console of the browser. */
      console.log(kendo.format("{0} is selected", task.title));
    }
  }
});
</script>

<div id="gantt"></div>
<script>
function gantt_change(e) {
  var selection = this.select();
    var task;

    if (selection) {
      task = this.dataItem(selection);
/* The result can be observed in the DevTools(F12) console of the browser. */
      console.log(kendo.format("{0} is selected", task.title));
    }
}
$("#gantt").kendoGantt({
  dataSource: [
    {
      id: 1,
      orderId: 0,
      parentId: null,
      title: "Task1",
      start: new Date("2014/6/17 9:00"),
      end: new Date("2014/6/17 11:00")
    },
    {
      id: 2,
      orderId: 1,
      parentId: null,
      title: "Task2",
      start: new Date("2014/6/17 12:00"),
      end: new Date("2014/6/17 14:00")
    }
  ]
});
var gantt = $("#gantt").data("kendoGantt");
gantt.bind("change", gantt_change);
</script>