wordpres: Add async Attributes to Enqueue Scripts where Needed

gistfile1.txt

/* Add async Attributes to Enqueue Scripts where Needed.
=========================================================================== */
function itl_script_tag_defer( $tag, $handle ) {
    if ( is_admin() ) {
        return $tag;
    }

    if ( strpos($tag, '/wp-includes/js/jquery/jquery') ) {
        return $tag;
    }

    return str_replace( ' src', ' async src', $tag );
}
add_filter( 'script_loader_tag', 'itl_script_tag_defer', 10, 2 );