id String|Number|Object

The mandatory unique identifier of the task.

Example - set the identifier of a task

<script>
var task = new kendo.data.GanttTask({
    id: 1,
    title: "Task1",
    start: new Date("2014/6/17 9:00"),
    end: new Date("2014/6/17 11:00")
});
</script>