ReactJS:从接口获取数据后立即将数据从父组件传递到子组件时出现问题。(仅限功能组件)

import React, { useEffect, useState } from 'react';
import axios from 'axios';
import ChildComponent from './ChildComponent';

const ParentComponent = () => {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await axios.get('https://api.example.com/data');
        setData(response.data);
      } catch (error) {
        console.error('Error fetching data:', error);
      }
    };

    fetchData();
  }, []);

  return (
    <div>
      {data ? <ChildComponent data={data} /> : <p>Loading...</p>}
    </div>
  );
};

export default ParentComponent;

import React, { useEffect, useState } from 'react';
import axios from 'axios';
import ChildComponent from './ChildComponent';

const ParentComponent = () => {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await axios.get('https://api.example.com/data');
        setData(response.data);
      } catch (error) {
        console.error('Error fetching data:', error);
      }
    };

    fetchData();
  }, []);

  return (
    <div>
      {data ? <ChildComponent data={data} /> : <p>Loading...</p>}
    </div>
  );
};

export default ParentComponent;