Is it possible to specify the encoding for the included js file?

Question

WordPress

The js file is included in functions

wp_enqueue_script( 'popap_respod', get_template_directory_uri() . '/popup_smartresponder/js/popap_respod.js' );

Is it possible to specify the encoding for the included file? What would end up looking like this
<script src="example.js" charset="utf-8"></script>