如何使用react js在Fetch API中设置超时

const fetchData = (url, timeout = 5000) => {
  return new Promise((resolve, reject) => {
    // 创建一个超时定时器
    const timer = setTimeout(() => {
      reject(new Error('请求超时'));
    }, timeout);
    
    fetch(url)
      .then(response => {
        clearTimeout(timer); // 请求成功后清除超时定时器
        resolve(response.json());
      })
      .catch(error => {
        clearTimeout(timer); // 请求失败后清除超时定时器
        reject(error);
      });
  });
};

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

const MyComponent = () => {
  const [data, setData] = useState(null);
  const [isLoading, setIsLoading] = useState(true);

  useEffect(() => {
    fetchData('https://api.example.com/data')
      .then(responseData => {
        setData(responseData);
        setIsLoading(false);
      })
      .catch(error => {
        console.error(error);
        setIsLoading(false);
      });
  }, []);

  if (isLoading) {
    return <div>Loading...</div>;
  }

  return (
    <div>
      {data && (
        <ul>
          {data.map(item => (
            <li key={item.id}>{item.name}</li>
          ))}
        </ul>
      )}
    </div>
  );
};

export default MyComponent;