如何存储动态多数组状态react

import React, { Component } from 'react';

class MyComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      items: [] // 初始化一个空数组
    };
  }

  addItem = () => {
    const newItem = 'New Item';
    this.setState(prevState => ({
      items: [...prevState.items, newItem] // 将新项添加到数组中
    }));
  }

  render() {
    return (
      <div>
        <button onClick={this.addItem}>添加项</button>
        <ul>
          {this.state.items.map((item, index) => (
            <li key={index}>{item}</li>
          ))}
        </ul>
      </div>
    );
  }
}

export default MyComponent;