class AsyncJs in Advanced CSS/JS Aggregation 8.3

Add async tag to scripts.

Hierarchy

• class \Drupal\advagg_mod\Asset\AsyncJs

1 file declares its use of AsyncJs

InitSubscriber.php in advagg_mod/src/EventSubscriber/InitSubscriber.php

1 string reference to 'AsyncJs'

advagg_mod.services.yml in advagg_mod/advagg_mod.services.yml

advagg_mod/advagg_mod.services.yml

1 service uses AsyncJs

advagg_mod.async_js in advagg_mod/advagg_mod.services.yml

Drupal\advagg_mod\Asset\AsyncJs

File

advagg_mod/src/Asset/AsyncJs.php, line 8

Namespace

Drupal\advagg_mod\Asset

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";
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AsyncJs::async	public	function	Add Async attribute to all external script tags.
AsyncJs::callback	protected	function	Callback to replace individual stylesheet links.