Hi,
I want to add tooltip on the side navigation menu(Main menus and sub menus) and on the menu items as shown below.

I tried to do this using add following javascript code in to a static application file.
$(document).ready(function(){
$("#t\_TreeNav").on("treeviewselectionchange", function() {
$(this).treeView("expand", $(this).treeView("getSelection"));
});
$('#t\_TreeNav').find('li.a-TreeView-node > div.a-TreeView-content').each(function( index ) {
$(this).find('span').prop('title', $(this).find('span').text());
});
});
Then add that file on shared components -> UI attributes -> User Interface -> under the JavaScript File URLs add the static application file reference.
But i only works for some menus.It didn't work on sub menus and menu items.