Object with data for the route. As of 1.4+ you can specify a route for the toolbar item. When the button is clicked, it will still emit .onClick event, but in addition it will follow a route defined for the button. The route can have dynamic data, for example: let toolbar = new w2toolbar({ name: 'toolbar', routeData: { id: 14 }, items: [ { type: 'radio', id: 'item1', group: '1', text: 'Details', route: '/view/:id/details' }, { type: 'radio', id: 'item2', group: '1', text: 'Summary', route: '/view/:id/summary' } ] }); In the example above, the ":id" from the route will be replaced with "14" from routeData object.