reactjs InfiniteScroll(react-infinite-scroll-component)在新数据填充时会导致页面底部

f4t66c6m 于 2023-08-04 发布在 React

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我正在使用InfiniteScroll（react-infinite-scroll-component）。这是相反的顺序。但每当我使用API加载新数据时，它都会导致页面底部。下面是我的代码：

<div
     id="scrollableDiv"
     style={{
       flex: 1,
       overflow: "auto",
       display: "flex",
       flexDirection: "column-reverse",
     }}
   >
     <InfiniteScroll
       dataLength={messageGroups.length}
       onScroll={e => {
         e.preventDefault();
         const scrollHeight = e.target.scrollHeight;
         const varHeight = e.target.scrollTop - e.target.clientHeight;
         console.log("varHeight", varHeight);
         if (scrollHeight + varHeight < 1) {
           onFetchPreviousMessages();
         }
       }}
       style={{ display: "flex", flexDirection: "column-reverse" }} //To put endMessage and loader to the top.
       id="scrollableDiv"
       ref={scrollableDiv}
       scrollableTarget="scrollableDiv"
     />
     <div ref={messageRef} />
     {!messageGroups.length && composeType === "help" && (
       <ExplorerLargeInfoBlock
         icon={<FaLifeRing />}
         header="Help Request"
         message="Need help? Send us a message below and someone on the project team will get back to you shortly."
       />
     )}
     {messageGroups.map(renderMessageGroup)}
</div>

I referred some posts where the div was being used, but not sure how to access the div.current in my case.

onFetchPreviousMessages is simply calling data API to fetch new data

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reactjs

来源：https://stackoverflow.com/questions/76818417/infinitescroll-react-infinite-scroll-component-leads-to-the-bottom-of-the-page

1条答案

按热度按时间

sauutmhj1#

要访问您的例子中的div.current，可以使用useRef钩子创建对scrollableDiv的引用。然后，您可以访问当前属性以获取底层DOM元素并操纵其滚动行为。

import { useRef } from "react";

const scrollableDiv = useRef(null);

<InfiniteScroll
  dataLength={messageGroups.length}
  next={onFetchPreviousMessages} // Use 'next' prop instead of 'onScroll'
  hasMore={true} // Assuming you have more data to load
  inverse={true} // Set this to true for reverse order
  loader={<h4>Loading...</h4>} // Optional: You can add a loading indicator
  scrollableTarget={scrollableDiv.current} // Pass the DOM element as the scrollable target
>
  {/* Render your message items here */}
</InfiniteScroll>

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reactjs InfiniteScroll(react-infinite-scroll-component)在新数据填充时会导致页面底部

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