Tree

<div class="k-tree" id="k-jqtree"></div>
<script defer>
(function($) {
    $(document).ready(function () {
        new Koowa.Tree('#k-jqtree', {
            "data": [
                {"label":"Main category","id":4},
                {"label":"Sub category 1","id":5,"parent":4},
                {"label":"Sub category 2","id":6,"parent":4},
                {"label":"Deeper category","id":7,"parent":6},
                {"label":"Sub category 3","id":8,"parent":4}
            ]
        });
    });
});
</script>