React Bootstrap分页动态添加active类失效问题排查

物品API运行正常，已在Pagination.Item上添加active类名，但该样式未生效，不确定是否遗漏配置项。

Movielist.js #

import { React, useState, useEffect } from "react";
import { Col, Card, Row, Pagination } from "react-bootstrap";
import MovieListPagination from "./MovieListPagination";

const MovieList = () => {
  const [error, setError] = useState(null);
  const [isLoaded, setIsLoaded] = useState(false);
  const [items, setItems] = useState([]);
  // 默认当前页码和每页条数
  const [currentPage, setCurrentPage] = useState(1);
  const [postsPerPage] = useState(4);
  // 获取当前页数据
  const indexOfLastPost = currentPage * postsPerPage;
  const indexOfFirstPost = indexOfLastPost - postsPerPage;
  const currentPosts = items.slice(indexOfFirstPost, indexOfLastPost);
  // 切换页码
  const paginate = (pageNumber) => setCurrentPage(pageNumber);

  useEffect(() => {
    fetch("https://jsonplaceholder.typicode.com/posts")
      .then((res) => res.json())
      .then(
        (result) => {
          setIsLoaded(true);
          setItems(result);
          //console.log(result.results);
        },
        (error) => {
          setIsLoaded(true);
          setError(error);
        }
      );
  }, []);

  if (error) {
    return <div className="p-3">Error: {error.message}</div>;
  } else if (!isLoaded) {
    return <div className="p-3">Loading...</div>;
  } else {
    return (
      <>
        <Row className="justify-content-center">
          {currentPosts.map((item) => (
            <Col sm={6} lg={4} xl={3} className="py-3" key={item.id}>
              <Card bg="dark" text="light" className="text-center h-100">
                <Card.Body>
                  <Card.Title>{item.title}</Card.Title>
                  <Card.Text>{item.body}</Card.Text>
                </Card.Body>
              </Card>
            </Col>
          ))}
          <Pagination className="justify-content-center">
            <MovieListPagination
              postsPerPage={postsPerPage}
              totalPosts={items.length}
              paginate={paginate}
            />
          </Pagination>
        </Row>
      </>
    );
  }
};

export default MovieList;

MovielistPagination.js #

import { React } from "react";
import { Pagination } from "react-bootstrap";

const MovieListPagination = ({
  currentPage,
  postsPerPage,
  totalPosts,
  paginate
}) => {
  const pageNumbers = [];
  for (let i = 1; i <= Math.ceil(totalPosts / postsPerPage); i++) {
    pageNumbers.push(i);
  }
  return (
    <>
      <Pagination.First />
      <Pagination.Prev />
      {pageNumbers.map((number) => (
        <Pagination.Item
          key={number}
          className={`${currentPage === number ? "active" : ""}`}
          onClick={() => {
            paginate(number);
          }}
        >
          {number}
        </Pagination.Item>
      ))}
      <Pagination.Next />
      <Pagination.Last />
      {/* {item.alt_description ? item.alt_description : item.user.name + ' Collection'} */}
    </>
  );
};

export default MovieListPagination;

内容的提问来源于stack exchange，提问作者clarkf