How to write scroll tracking for a component in ReactJS?

Question

React

I want to set css animation of soft appearance when scrolling.
how to set wiretapping scroll?

Answer 1

As I understand it, the problem is precisely that it is necessary to listen to the scroll not of window, but of a specific block?
Then:
1. We get a link to a specific react element - https://reactjs.org/docs/refs-and-the-dom.html
2. Then you can simply listen to the scroll event through native js - https://learn.javascript. en/size-and-scroll
Just don't forget to remove the listener when you unmount the component.