在react js中创建依赖的下拉菜单？

npm install react react-dom

import React, { useState } from 'react';

const DropdownMenu = () => {
  const [selectedOption, setSelectedOption] = useState(''); // 用于存储选择的选项

  const handleOptionChange = (event) => {
    setSelectedOption(event.target.value); // 更新选择的选项
  };

  return (
    <div>
      <label htmlFor="dropdown">选择一个选项：</label>
      <select id="dropdown" value={selectedOption} onChange={handleOptionChange}>
        <option value="">请选择</option>
        <option value="option1">选项1</option>
        <option value="option2">选项2</option>
        <option value="option3">选项3</option>
      </select>
      <p>你选择的选项是：{selectedOption}</p>
    </div>
  );
};

export default DropdownMenu;

import React from 'react';
import ReactDOM from 'react-dom';
import DropdownMenu from './DropdownMenu';

ReactDOM.render(<DropdownMenu />, document.getElementById('root'));