Track and display the version of this script

quiz.js

 // This horrible file is distributed under the CC0 license.  Consult
 // ./LICENSE for more details.
 
-// $Id: quiz.js,v 1.3 2024/01/12 10:15:28 oj14ozun Exp oj14ozun $
+const version = "$Id: quiz.js,v 1.4 2024/01/12 10:17:23 oj14ozun Exp oj14ozun $";
 
 "use strict";
 
@@ -13,6 +13,7 @@ const info        = document.getElementById("info");
 const info_toggle = document.getElementById("info-toggle");
 const action      = document.getElementById("action");
 const stats       = document.getElementById("stats");
+const js_version  = document.getElementById("js-version");
 
 const class_list  = document.documentElement.classList;
 
@@ -235,3 +236,5 @@ action.onclick = _ => {
     // when done, load first question
     next();
 })();
+
+js_version.innerHTML = version;