Javascript - 点击事件在“无限滚动”后不再起作用

So I have an infinite scroll system in my javascript. First it loads 50 items, then if you scroll down a bit then another 50 items. The problem with this is that, if you scroll down and click on item nothing happens. If you first load the page and there's the 50 items, if you click on the one of the items, then it goes system in my javas