We will add an audio player to the page that will stay when page changes. This emphasises the fact that browsing inside an application does not stop the client side code: the music keeps playing when the content of the page and the url change.
We first create the player node at toplevel.
let player = Eliom_content.Html.Id.create_global_elt (audio ~srcs:(make_uri (Eliom_service.static_dir ()) ["music.ogg"], ) ~a:[a_autoplay (`Autoplay);a_controls (`Controls)] [pcdata "Your browser does not support audio element" ])
And we insert the player in the page.
And that's all! Since the player node is declared unique, no new player is created when the page changed: this is exact same node.
To run this example, you will need to add an ogg file in the static directory. If you can't find one, there is one here: http://www.gnu.org/music/free-software-song.html.