如何在Javascript中下载内存文件对象？

function downloadMemoryFile(memoryFile, fileName) {
  // Step 1: Convert memory file to Blob object
  const blob = new Blob([memoryFile]);

  // Step 2: Convert Blob object to URL
  const url = URL.createObjectURL(blob);

  // Step 3: Create a hidden <a> tag
  const link = document.createElement('a');
  link.href = url;

  // Step 4: Set download attribute
  link.download = fileName;

  // Step 5: Append <a> tag to document
  document.body.appendChild(link);

  // Step 6: Simulate click event to trigger download
  link.click();

  // Step 7: Revoke URL object
  URL.revokeObjectURL(url);
}

// Usage example
const memoryFile = new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f]); // Example memory file
const fileName = 'example.txt'; // Example file name
downloadMemoryFile(memoryFile, fileName);