Localize PHP Variables to JavaScript

gistfile1.txt

function set_js_vars() {
    wp_register_script( 'jsVars', '');
    wp_localize_script( 'jsVars', 'page_urls', array(
        'ajaxUrl' => admin_url( 'admin-ajax.php' ),
        'homeURL' => get_home_url(),
        'templateDir' => get_template_directory_uri(),
    ) );
    wp_enqueue_script( 'jsVars' );
}

add_action( 'wp_enqueue_scripts', 'set_js_vars' );