Object with data for the route. As of 1.4+ you can specify a route for the sidebar item. When the item is clicked, it will still emit .onClick event, but in addition it will follow a route defined for the item. The route can have dynamic data, for example: let sidebar = new w2sidebar({ name : 'sidebar', routeData: { id: 14 }, nodes: [ { id: 'id-1', text: 'Level 1', route: '/view/:id/details' }, { id: 'id-2', text: 'Level 2', expanded: true, nodes: [ { id: 'id-2-1', text: 'Level 2.1', route: '/view/:id/sub1' }, { id: 'id-2-2', text: 'Level 2.2', route: '/view/:id/sub2' } ]}, { id: 'id-3', text: 'Level 3' } ] }); In the example above, the ":id" from the route will be replaced with "14" from routeData object.