understrap/inc/enqueue.php

<?php
/**
 * understrap enqueue scripts
 *
 * @package understrap
 */

function understrap_scripts() {
	wp_enqueue_style( 'understrap-styles', get_stylesheet_directory_uri() . '/css/theme.min.css', array(), '0.4.9' );
	wp_enqueue_script( 'jquery' );
	wp_enqueue_script( 'understrap-scripts', get_template_directory_uri() . '/js/theme.min.js', array(), '0.4.9', true );

	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
		wp_enqueue_script( 'comment-reply' );
	}

	// menu - vertical page association
	if ( is_page_template( 'page-templates/vertical-one-page.php' ) || is_home() || is_single() ) {
		wp_enqueue_script( 'vertical-one-page', get_template_directory_uri() . '/js/vertical-one-page.js', array( 'jquery' ), '0.4.9', true );
		$page_for_posts = strtolower( get_the_title( get_option( 'page_for_posts' ) ) );
		$home_url       = home_url();
		$is_single      = is_single();
		$vars           = array(
			'pageForPosts' => $page_for_posts,
			'homeUrl'      => $home_url,
			'isSingle'     => $is_single
		);
		wp_localize_script( 'vertical-one-page', 'vars', $vars );
	}
	// menu - vertical page association end
}

add_action( 'wp_enqueue_scripts', 'understrap_scripts' );

/**
 *Loading slider script conditionally
 **/

if ( is_active_sidebar( 'hero' ) ):
	add_action( "wp_enqueue_scripts", "understrap_slider" );

	function understrap_slider() {
		if ( is_front_page() ) {
			$data = array(
				"timeout" => intval( get_theme_mod( 'understrap_theme_slider_time_setting', 5000 ) ),
				"items"   => intval( get_theme_mod( 'understrap_theme_slider_count_setting', 1 ) )
			);

			wp_enqueue_script( "understrap-slider-script", get_stylesheet_directory_uri() . '/js/slider_settings.js', array(), '0.4.9' );
			wp_localize_script( "understrap-slider-script", "understrap_slider_variables", $data );
		}
	}
endif;