let sidebar = new w2sidebar({

    name : 'sidebar',

    img  : 'icon-page',

    nodes: [

        { id: 'id-1', text: 'Level 1', hidden: true },

        { id: 'id-2', text: 'Level 2', expanded: false, nodes: [

            { id: 'id-2-1', text: 'Level 2.1' },

            { id: 'id-2-2', text: 'Level 2.2' }

        ]},

        { id: 'id-3', text: 'Level 3' }

    ]

});

​

w2ui.sidebar.select('id-2-1');

w2ui.sidebar.expandParents('id-2-1');

​