js文件大小格式化

function formatFileSize(bytes, decimalPoint = 2) {
  if (bytes == 0) return "0 Bytes";
  let k = 1000,
    sizes = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"],
    i = Math.floor(Math.log(bytes) / Math.log(k));
  return (
    parseFloat((bytes / Math.pow(k, i)).toFixed(decimalPoint)) + " " + sizes[i]
  );
}

参考

• 文件大小格式化: https://www.codexworld.com/how-to/convert-file-size-bytes-kb-mb-gb-javascript/