在Firefox上下载文本文件或图像抛出javascript

function downloadFile(url, filename) {
  var element = document.createElement('a');
  element.setAttribute('href', url);
  element.setAttribute('download', filename);
  element.style.display = 'none';
  document.body.appendChild(element);
  element.click();
  document.body.removeChild(element);
}

// 下载文本文件
var text = 'Hello, World!';
var filename = 'example.txt';
var blob = new Blob([text], { type: 'text/plain' });
var url = URL.createObjectURL(blob);
downloadFile(url, filename);

// 下载图像文件
var imageUrl = 'https://example.com/image.jpg';
var imageFilename = 'image.jpg';
downloadFile(imageUrl, imageFilename);