Add CSS & JS files in WP functions

add-css-js-files-in-wp-functions.php

<?php
/* Add CSS & JS files in WP functions */

function wp_elevate_zoom_add_scripts() {
	// Load jQuery if it isn't already
	wp_enqueue_script('jquery');
  
	// Load custom jQuery
	wp_register_script('wpez-min-jquery', get_bloginfo('template_url') . '/elevate-zoom/js/jquery-1.8.3.min.js', array( 'jquery' ), null, true );
	wp_enqueue_script( 'wpez-min-jquery' );
  
	wp_register_script('wpez-elevate-jquery', get_bloginfo('template_url') . '/elevate-zoom/js/jquery.elevatezoom.js', array( 'jquery' ), null, true);
	wp_enqueue_script( 'wpez-elevate-jquery' );
  
	wp_register_style( 'wpez-main-style', get_bloginfo('template_url') . '/elevate-zoom/css/main.css', array(), '', 'all' );
	wp_enqueue_style('wpez-main-style');
}
add_action( 'wp_enqueue_scripts', 'wp_elevate_zoom_add_scripts' );
?>