I'm trying to defer javascript on zara theme

For that i add this code into theme function.php

function minify_js_files( $url ) {
    if ( is_user_logged_in() ) return $url; //don't break WP Admin
    if ( FALSE === strpos( $url, '.js' ) ) return $url;
    if ( strpos( $url, 'min.js' ) ) return $url;
    return str_replace( ' src', ' defer src', $url );
}
osc_add_hook( 'minify-js', 'minify_js_files', 1 );
after i run hook minify-js in footer

But seems it's not working....




The question is, how can i defer parsing of javascripp in zara theme? There is any suggestion abou t how can defer javascript??



Best Regards
João

@jcarrolo01
Best, simplest and fastest way is to simply merge files used in theme into one file (in order they are showing in theme) and use this file only.