函式:wp_script_is( string $handle, string $list = ‘enqueued’ )
說明:https://developer.wordpress.org/reference/functions/wp_script_is/
功能:判斷script是否有被加入到佇列中
範例
if ( ! wp_script_is( 'my-script' ) ) {
wp_enqueue_script( 'my-script', PLUGIN_PATH . 'script.js', array( 'jquery' ), '1.0.0' );
}