TypeError:无法读取React组件中post对象的属性“”title“”

const [post, setPost] = useState({});

{post && post.title ? <h1>{post.title}</h1> : <p>Loading...</p>}

<h1>{post?.title || 'Default Title'}</h1>

useEffect(() => {
  const fetchData = async () => {
    const response = await fetch('your-api-endpoint');
    const data = await response.json();
    setPost(data);
  };

  fetchData();
}, []);

import React, { useState, useEffect } from 'react';

function PostDetail({ postId }) {
  const [post, setPost] = useState(null);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    const fetchPost = async () => {
      try {
        const response = await fetch(`/api/posts/${postId}`);
        const data = await response.json();
        setPost(data);
      } catch (error) {
        console.error('Error fetching post:', error);
      } finally {
        setLoading(false);
      }
    };

    fetchPost();
  }, [postId]);

  if (loading) return <p>Loading...</p>;
  if (!post) return <p>Post not found.</p>;

  return (
    <div>
      <h1>{post.title}</h1>
      <p>{post.content}</p>
    </div>
  );
}

export default PostDetail;