wp_register_script( $handle, $src, $deps, $ver, $in_footer );
wp_register_style( $handle, $src, $deps, $ver, $media );


if (!is_admin()) {
add_action(\'wp_enqueue_scripts\', \'my_js\'); // for js
add_action(\'wp_enqueue_scripts\',\'my_style\'); // for css
}
function my_js(){
 if(is_page(page id)){ // or is_page_template(page slug)
    wp_register_script( \'port-js\', get_template_directory_uri() . \'/portfolio-js.js\');
    wp_enqueue_script( \'port-js \');
 }
}
function my_style(){
 if(is_page(page id)){ // or is_page_template(page slug)
        wp_register_style( \'port-style\', get_template_directory_uri() . \'/portfolio-style.css\');
        wp_enqueue_style( \'port-style\' );
 }
}