isRecurrenceHead
Checks whether the event is the head of a recurring series.
Returns
Boolean return true if event is a recurrence head.
Example - check whether an event is a recurrence head
<script>
    var event = new kendo.data.SchedulerEvent({
        id: 1,
        title: "Task1",
        start: new Date("2013/4/4"),
        end: new Date("2013/4/4"),
        recurrenceRule: "FREQ=DAILY"
    });
/* The result can be observed in the DevTools(F12) console of the browser. */
    console.log(event.isRecurrenceHead()); //logs 'true'
</script>In this article