data 为两个根据id获取的元素时，会产生一个空的li,空白页。

有一个li是空白页，

Reproduce the issue in iSlider with data containing two elements selected by id, then inspect the slider item-generation entry point for the source of the empty li. Done means the resulting slider has no empty item and no blank page; the issue provides no file or test name, so repository-wide search is needed first.

Written by the indexing model from the issue text.