如何在react中用钩子替换基于类的组件

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

function MyComponent() {
  const [count, setCount] = useState(0);

  // 其他钩子函数和业务逻辑代码

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={() => setCount(count + 1)}>Increment</button>
    </div>
  );
}

function MyComponent() {
  const [count, setCount] = useState(0);

  useEffect(() => {
    // componentDidMount和componentDidUpdate的逻辑
    document.title = `Count: ${count}`;

    return () => {
      // componentWillUnmount的逻辑
      document.title = 'React App';
    };
  }, [count]);

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={() => setCount(count + 1)}>Increment</button>
    </div>
  );
}