functions.php

<?php
    /**
     * A safe way of adding javascripts to a WordPress generated page.
     */
    if (!is_admin())
        add_action('wp_enqueue_scripts', 'responsive_child_js');

    if (!function_exists('responsive_child_js')) {

        function responsive_child_js () {
            // JavaScript at the bottom for fast page loading.
            wp_enqueue_script('custom-scripts', get_stylesheet_directory_uri() . '/js/custom-scripts.js', array('jquery'), '1.0.0', true);
            wp_enqueue_script('custom-plugins', get_stylesheet_directory_uri() . '/js/custom-scripts.js', array('jquery'), '1.0.0', true);
        }

    }
?>