React Hooks:将参数传递给自定义Hook以动态设置API请求查询

import { useState, useEffect } from 'react';

// 自定义 Hook，用于从 API 获取数据
function useApiData(queryParam) {
  const [data, setData] = useState(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await fetch(`https://api.example.com/data?query=${queryParam}`);
        const result = await response.json();
        setData(result);
      } catch (err) {
        setError(err);
      } finally {
        setLoading(false);
      }
    };

    fetchData();
  }, [queryParam]); // 依赖项数组，当 queryParam 变化时重新获取数据

  return { data, loading, error };
}

// 使用自定义 Hook 的组件
function MyComponent({ queryParam }) {
  const { data, loading, error } = useApiData(queryParam);

  if (loading) return <div>Loading...</div>;
  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      <h1>Data:</h1>
      <pre>{JSON.stringify(data, null, 2)}</pre>
    </div>
  );
}