如何通过按钮点击生成唯一按钮

<button id="uniqueButton">生成唯一按钮</button>

const express = require('express');
const { v4: uuidv4 } = require('uuid');

const app = express();

app.get('/generateButton', (req, res) => {
  const uniqueButtonId = uuidv4();
  const buttonHtml = `<button id="${uniqueButtonId}">唯一按钮</button>`;
  res.send(buttonHtml);
});

app.listen(3000, () => {
  console.log('服务器已启动，监听端口3000');
});

const generateButton = document.getElementById('uniqueButton');

generateButton.addEventListener('click', () => {
  fetch('/generateButton')
    .then(response => response.text())
    .then(buttonHtml => {
      const buttonContainer = document.getElementById('buttonContainer');
      buttonContainer.innerHTML = buttonHtml;
    });
});