Wordpress conditional script loading in functions.php. Source: http://www.organizedthemes.com/loading-scripts-conditionally/

Wordpress conditional script loading

  if( !is_admin()){
     wp_register_script('thescript', get_template_directory_uri() . '/path/to/thescript.js', array('jquery'), '1.2.3', true );
  }

  function conditional_scripts() {
      if( !is_admin() && is_page('somepage') ){
         wp_enqueue_script('thescript');
      }

  }
  add_action('wp_enqueue_scripts', 'conditional_scripts');