映射react中的数组，降序

import React, { Component } from 'react';

class ArrayMapping extends Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [5, 2, 8, 1, 9],
    };
  }

  render() {
    return (
      <div>
        {this.state.data
          .sort((a, b) => b - a) // 降序排序
          .map((item, index) => (
            <div key={index}>{item}</div>
          ))}
      </div>
    );
  }
}

export default ArrayMapping;