The Nav Bar widget can be added to the page to provide a navigation bar that accommodates an unlimited number of options in a compact element that placed inside a header, content, or footer region of the page. It displays up to 4 items in a horizontal bar with out without icons. If more than 4 items are in the navigation list, the 4th slot is used for a "more" link that opens a separate overlay with the full list of items.
The markup for a nav bar is identical to a basic linked list view: an unordered list with a link in each item and an optional icon. This markup is transformed into a nav bar by adding a data-role="navbar" attribute to the list.