NodeJs客户端中的条件html提交选项

const http = require('http');

const server = http.createServer((req, res) => {
  if (req.method === 'POST' && req.url === '/submit') {
    let body = '';
    req.on('data', (chunk) => {
      body += chunk;
    });
    req.on('end', () => {
      const formData = new URLSearchParams(body);
      const option = formData.get('option');
      if (option === 'A') {
        // 执行针对选项A的操作
        res.writeHead(200, {'Content-Type': 'text/html'});
        res.end('<h1>选项A被选择！</h1>');
      } else if (option === 'B') {
        // 执行针对选项B的操作
        res.writeHead(200, {'Content-Type': 'text/html'});
        res.end('<h1>选项B被选择！</h1>');
      } else {
        // 执行针对其他选项的操作
        res.writeHead(200, {'Content-Type': 'text/html'});
        res.end('<h1>其他选项被选择！</h1>');
      }
    });
  } else {
    res.writeHead(404, {'Content-Type': 'text/html'});
    res.end('<h1>页面不存在！</h1>');
  }
});

server.listen(3000, () => {
  console.log('Server is running on port 3000');
});