Web Element getBoundingClientRect
[Viewport](https://texonom.com/viewport-51df9f012fc64a909a967a9a766cf637) 


[뷰포트](https://developer.mozilla.org/ko/docs/Glossary/Viewport)에 상대적인 위치 정보를 제공하는 `[DOMRect](https://developer.mozilla.org/ko/docs/Web/API/DOMRect)` 객체를 반환




> [[스압/데이터주의] 웹 최적화 방식 모음 - 3. Layout 및 렌더링](https://black7375.tistory.com/79)

> [Element.getBoundingClientRect() - Web API | MDN](https://developer.mozilla.org/ko/docs/Web/API/Element/getBoundingClientRect)





