如何在React中使用map和filter遍历json？

import React, { Component } from 'react';

class MyComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [
        { id: 1, name: 'John' },
        { id: 2, name: 'Jane' },
        { id: 3, name: 'Bob' }
      ]
    };
  }

  render() {
    return (
      <div>
        {/* 在这里使用map和filter遍历JSON */}
      </div>
    );
  }
}

export default MyComponent;

render() {
  return (
    <div>
      {this.state.data.map(item => (
        <p key={item.id}>{item.name}</p>
      ))}
    </div>
  );
}

render() {
  const filteredData = this.state.data.filter(item => item.name.startsWith('J'));

  return (
    <div>
      {filteredData.map(item => (
        <p key={item.id}>{item.name}</p>
      ))}
    </div>
  );
}