쓰로틀링, 인터렉션옵저버api 관련 자료 링크
https://dev.to/producthackers/intersection-observer-using-react-49ko
Intersection Observer using React
Today we are gonna explore how to use the intersection observer API in React and see some useful exam...
dev.to
https://dev.to/n8tb1t/tracking-scroll-position-with-react-hooks-3bbj
https://www.sitepoint.com/throttle-scroll-events/
https://medium.com/@kwoncharles/debounce%EC%99%80-throttle%EC%9D%98-%EC%B0%A8%EC%9D%B4-34845fbfa1ff
https://www.javascripttutorial.net/javascript-dom/javascript-scroll-events/
https://css-tricks.com/debouncing-throttling-explained-examples/ 좋음!
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react-scroll
https://github.com/fisshy/react-scroll
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https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API
Intersection Observer API - Web APIs | MDN
The Intersection Observer API provides a way to asynchronously observe changes in the intersection of a target element with an ancestor element or with a top-level document's viewport.
developer.mozilla.org
https://devkkiri.com/post/927ae150-7627-4e25-b29f-2d0293b82332