react-选择下拉列表不可见

import React, { Component } from 'react';

class Dropdown extends Component {
  constructor(props) {
    super(props);
    this.state = {
      isOpen: false
    };
  }

  toggleDropdown = () => {
    this.setState(prevState => ({
      isOpen: !prevState.isOpen
    }));
  }

  handleOptionSelect = (option) => {
    // 处理选项选择的逻辑
  }

  render() {
    const { isOpen } = this.state;
    const { options } = this.props;

    return (
      <div>
        <button onClick={this.toggleDropdown}>Toggle Dropdown</button>
        {isOpen && (
          <ul>
            {options.map(option => (
              <li key={option.id} onClick={() => this.handleOptionSelect(option)}>
                {option.label}
              </li>
            ))}
          </ul>
        )}
      </div>
    );
  }
}

export default Dropdown;