React条件渲染中的表迭代

import React from 'react';

function TableComponent({ data }) {
  return (
    <table>
      <thead>
        <tr>
          <th>Name</th>
          <<th>Age</th>
        </tr>
      </thead>
      <tbody>
        {data.map((item) => (
          <tr key={item.id}>
            <td>{item.name}</td>
            <td>{item.age}</td>
          </tr>
        ))}
      </tbody>
    </table>
  );
}

function App() {
  const data = [
    { id: 1, name: 'John', age: 25 },
    { id: 2, name: 'Jane', age: 30 },
    { id: 3, name: 'Bob', age: 35 },
  ];

  return (
    <div>
      {data.length > 0 ? (
        <TableComponent data={data} />
      ) : (
        <p>No data available.</p>
      )}
    </div>
  );
}

export default App;