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@seonysun/intersection-observer

v0.0.4

Published

React hook for IntersectionObserver

Readme

@seonysun/intersection-observer

React 환경에서 무한 스크롤을 구현할 때 유용한 useIntersectionObserver 훅입니다. IntersectionObserver API를 간단한 형태로 래핑하여, 특정 요소가 뷰포트에 등장하면 자동으로 다음 데이터를 불러올 수 있도록 도와줍니다.


설치

npm install @seonysun/intersection-observer
# 또는
yarn add @seonysun/intersection-observer

사용 방법

import { useIntersectionObserver } from "@seonysun/intersection-observer";

const MyComponent = () => {
  const {
    data,
    fetchNextPage,
    hasNextPage,
    isFetchingNextPage,
  } = useMyInfiniteQuery();

  const observerRef = useIntersectionObserver({
    hasNextPage,
    isFetchingNextPage,
    fetchNextPage,
    threshold: 0.5, // 기본값 0.5
  });

  return (
    <div>
      {data.map((item) => (
        <Item key={item.id} {...item} />
      ))}

      {/* 관찰 대상 요소 */}
      <div ref={observerRef} style={{ height: 1 }} />
    </div>
  );
};

반환값 ref: React.RefObject<HTMLDivElement>

관찰할 대상 요소에 연결하면 됩니다.


options

| 옵션 | 타입 | 설명 | | -------------------- | ---------- | ----------------------------------- | | hasNextPage | boolean | 다음 페이지가 존재할 때 true | | isFetchingNextPage | boolean | 다음 페이지를 불러오는 중인지 여부 | | fetchNextPage | () => void | 요소가 보이면 호출되는 함수 | | threshold | number | 요소가 어느 정도 보여야 콜백이 실행될지 결정 (기본값 0.5) |