script_loader_tag

To add defer / async to enqueued script with id “fontawesome5 <?php wp_enqueue_script(‘fontawesome5’, ‘https://use.fontawesome.com/releases/v5.0.9/js/all.js’, array(), ‘5.0.9’, true); <?php add_filter(‘script_loader_tag’, ‘add_defer’, 10, 2); function add_defer($tag, $handle) { if($handle !== ‘fontawesome5’) { return $tag; } return str_replace(‘ src=’, ‘ defer src=’, $tag); } <?php add_filter(‘script_loader_tag’, ‘add_async’, 10, 2); function add_async($tag, $handle) { if($handle !== ‘fontawesome5’) { return $tag; } return str_replace(‘ src=’, ‘ async src=’, $tag); } Source: https://e-joint.jp/505/