JAVASCRIPT

infinite scroll for chat react js

<div
  id="scrollableDiv"
  style={{
    height: 300,
    overflow: 'auto',
    display: 'flex',
    flexDirection: 'column-reverse',
  }}
>
  {/*Put the scroll bar always on the bottom*/}
  <InfiniteScroll
    dataLength={this.state.items.length}
    next={this.fetchMoreData}
    style={{ display: 'flex', flexDirection: 'column-reverse' }} //To put endMessage and loader to the top.
    inverse={true} //
    hasMore={true}
    loader={<h4>Loading...</h4>}
    scrollableTarget="scrollableDiv"
  >
    {this.state.items.map((_, index) => (
      <div style={style} key={index}>
        div - #{index}
      </div>
    ))}
  </InfiniteScroll>
</div>