The MVVM model to bind to. If a string is passed, The view will try to resolve a reference to the view model variable in the global scope.

<script>
 var foo = { bar: "baz" }
</script>

<div data-role="view" data-model="foo">
   <span data-bind="text:bar"></span>
</div>

The text to display in the navbar title (if present) and the browser title.