如何获取下载的文件名？(硒)

function downloadFile(url, fileName) {
  const link = document.createElement('a');
  link.href = url;
  link.download = fileName;
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
}

// 使用示例
downloadFile('path/to/file', 'desired-filename.ext');

const http = require('http');
const fs = require('fs');

http.createServer((req, res) => {
  const filePath = 'path/to/file';
  const fileName = filePath.split('/').pop();

  res.setHeader('Content-Disposition', `attachment; filename=${fileName}`);
  res.setHeader('Content-Type', 'application/octet-stream');

  const fileStream = fs.createReadStream(filePath);
  fileStream.pipe(res);
}).listen(3000);

const fileName = `${Date.now()}-${originalFileName}`;

const sanitizeFileName = (name) => name.replace(/[/\\:*?"<>|]/g, '_');