Code:

        <div id="tl1" class="tree-list" data-treelist-buttons="true">

        </div>

        <!-- Initialize -->
        window.Causeway.treeList.init('#tl1', data, Options);
        Options object is optional.

        <!--To get the updated JSON-->
        window.Causeway.treeList.toJson('#tl1'); // This will return JSON Data