AsyncJs.php in Advanced CSS/JS Aggregation 8.3

Namespace

Drupal\advagg_mod\Asset

File

advagg_mod/src/Asset/AsyncJs.php

<?php

namespace Drupal\advagg_mod\Asset;


/**
 * Add async tag to scripts.
 */
class AsyncJs {

  /**
   * Add Async attribute to all external script tags.
   *
   * @param string $content
   *   The response content.
   *
   * @return string
   *   Updated content.
   */
  public function async($content) {
    $pattern = '/<script src=".*"/';
    return preg_replace_callback($pattern, [
      $this,
      'callback',
    ], $content);
  }

  /**
   * Callback to replace individual stylesheet links.
   *
   * @param array $matches
   *   Array from matches from preg_replace_callback.
   *
   * @return string
   *   Updated html string.
   */
  protected function callback(array $matches) {
    return "{$matches[0]} async";
  }

}

Classes

Name	Description
AsyncJs	Add async tag to scripts.