text: $(function () {
      // 6 create an instance when the DOM is ready
      $('#jstree').jstree();
      // 7 bind to events triggered on the tree
      $('#jstree').on("changed.jstree", function (e, data) {
          console.log(data.selected);
      });
      // 8 interact with the tree - either way is OK
      $('button').on('click', function () {
          $('#jstree').jstree(true).select_node('child_node_1');
          $('#jstree').jstree('select_node', 'child_node_1');
          $.jstree.reference('#jstree').select_node('child_node_1');
      });
  });
  