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Expanded

configuration

If set to true, the task is expanded and the tasks of its child are visible.

expanded

Boolean

Default: true

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