在Internet Explorer上使用JavaScript将Base64数据转换为文件时出错(0x800a01bd- JavaScript运行时错误:对象不支持此操作)

function base64ToFile(base64Data, fileName) {
  var byteCharacters = atob(base64Data);
  var byteArrays = [];

  for (var offset = 0; offset < byteCharacters.length; offset += 512) {
    var slice = byteCharacters.slice(offset, offset + 512);

    var byteNumbers = new Array(slice.length);
    for (var i = 0; i < slice.length; i++) {
      byteNumbers[i] = slice.charCodeAt(i);
    }

    var byteArray = new Uint8Array(byteNumbers);
    byteArrays.push(byteArray);
  }

  var blob = new Blob(byteArrays, { type: 'application/octet-stream' });

  var url = URL.createObjectURL(blob);

  var a = document.createElement('a');
  a.href = url;
  a.download = fileName;
  a.click();

  URL.revokeObjectURL(url);
}

var base64Data = '...'; // 这里替换为你的Base64数据
var fileName = 'file.txt'; // 这里替换为你想要保存的文件名

base64ToFile(base64Data, fileName);