duration

Returns the Gantt task length in milliseconds.

Returns

Number—The length of the task.

Example - get the length of the 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")
});

/* The result can be observed in the DevTools(F12) console of the browser. */
console.log(task.duration());
</script>