Indicates if sidebar has keyboard focus. Read Only. You can navigate sidebar with keyboard using arrow keys. You can expand and collapse nodes with enter or right/left arrow keys, but it will only work if sidebar has focus. If you define sidebar in the following way: let sidebar = new w2sidebar({ name : 'sidebar', nodes: [ { id: 'id-1', text: 'Level 1' }, { id: 'id-2', text: 'Level 2' }, { id: 'id-3', text: 'Level 3' } ] }); You can find if sidebar has focus by: console.log(w2ui.sidebar.hasFocus);