gistfile1.php

<?php
$js_match_field_element_attributes = <<<JS
function () {
  var expectations = $expected_field_attributes_json;
  var entityCollection = Drupal.quickedit.collections.entities;
  var entityModel = entityCollection.get('$entity_page_id');
  return entityModel.get('fields').reduce(function (result, fieldModel) {
    var fieldID = fieldModel.get('fieldID');
    var element = fieldModel.get('el');
    var matches = element.webkitMatchesSelector(expectations[fieldID]);
    result[fieldID] = matches ? matches : element.outerHTML;
    return result;
  }, {});
}()
JS;