The solution is to put a HTML element inside the ScrollView wrapper. Even an empty <div> tag will do the job.
scrollview = $(
'<div data-role="page">Item1</div><div data-role="page">Item2</div>'
On a side note it is unclear what exactly you would like to achieve. If you would like to feed the widget with content at a later point (not during the initialization) then probably it will be easier to bind it to a DataSource.
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