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jquery True event, when the page scrolls to the top of each p, execute an event
You $("p") can get all p. Then postion().top will have their top, and then in your scroll event, judge that the current scroll height exceeds that, and trigger something
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
You $("p") can get all p. Then postion().top will have their top, and then in your scroll event, judge that the current scroll height exceeds that, and trigger something