Kendo UI Mobile base
HTML
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.mobile.all.min.css">
<script src="http://cdn.kendostatic.com/2012.2.710/js/kendo.all.min.js"></script>
<div data-role="view" data-title="View Title" id="fav-list" data-transition="overlay:up" data-init="initFavList">
<header data-role="header">
<div id="fav-list-navbar" data-role="navbar">
<a class="nav-button" data-align="left" href="#my-favourites" data-transition="overlay:up reverse" data-role="backbutton" >Back</a>
<span data-role="view-title"></span>
</div>
</header>
<a data-role="button" data-click="changetitle">Change Title</a>
</div>
JavaScript
new kendo.mobile.Application();
function changetitle() {
$("#fav-list-navbar").data("kendoMobileNavBar").title("foo");
}