PHP offers print_r() and var_dump() methods that can print the values of arrays and objects recursively with values indented so it’s easy to debug code. There’s no print_r for JavaScript but OpenJS has an equivalent function for dumping variables in a structured format.

function dump(arr, level) {
  var dumped_text = '';
  if (!level) level = 0;

  // The padding given at the beginning of the line.
  var level_padding = '';

  for (var j = 0; j < level + 1; j++) level_padding += '  ';

  if (typeof arr == 'object') {
    // Array/Hashes/Objects

    for (var item in arr) {
      var value = arr[item];

      if (typeof value == 'object') {
        // If it is an array,
        dumped_text += level_padding + "'" + item + "' ...\n";
        dumped_text += dump(value, level + 1);
      } else {
        dumped_text += level_padding + "'" + item + '\' => "' + value + '"\n';
      }
    }
  } else {
    // Stings/Chars/Numbers etc.
    dumped_text = '===>' + arr + '<===(' + typeof arr + ')';
  }
  return dumped_text;
}