The title says it all. I got a list of LI elements. When clicked on navigation the active li gets a class 'current' but this takes a second. But when I use my code I need to click on the nav then the li opens and I need to click again to make the code register. The place of the videos cannot be hardcoded! It needs to be dynamic.The title says it all. I got a list of LI eleme
阅读背景：
由于类赋值延迟，onclick函数需要双击
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