snippet: JS: Humanize bytes to KB / MB / GB

humanize_filesize.js

humanize = function (size) {
  var gb = Math.pow(1024, 3);
  var mb = Math.pow(1024, 2);
  var kb = 1024;

  if (size >= gb)
    return Math.floor(size / gb) + ' GB';
  else if (size >= 1024^2)
    return Math.floor(size / mb) + ' MB';
  else if (size >= 1024)
    return Math.floor(size / kb) + ' KB';
  else
    return size + ' Bytes';
};