数组中特定对象属性的setState

import React, { Component } from 'react';

class MyComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [
        { id: 1, name: 'Alice', age: 20 },
        { id: 2, name: 'Bob', age: 25 },
        { id: 3, name: 'Charlie', age: 30 }
      ]
    };
  }

  updateAge = (id, newAge) => {
    this.setState(prevState => {
      const newData = prevState.data.map(item => {
        if (item.id === id) {
          return { ...item, age: newAge }; // 更新特定对象的属性值
        }
        return item;
      });
      return { data: newData };
    });
  }

  render() {
    return (
      <div>
        {this.state.data.map(item => (
          <div key={item.id}>
            <span>{item.name}</span>
            <span>{item.age}</span>
          </div>
        ))}
        <button onClick={() => this.updateAge(2, 30)}>Update Age</button>
      </div>
    );
  }
}

export default MyComponent;