Amélioration du script de la barre de navigation pour détecter lorsque l'url...

Amélioration du script de la barre de navigation pour détecter lorsque l'url n'a pas le paramètre action.

resources/views/components/navbar.php

 <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
     <div class="container-fluid">
         <a class="navbar-brand" href="?action=lireAuteurs">Bibliothèque</a>
-        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
+                aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
             <span class="navbar-toggler-icon"></span>
         </button>
         <div class="collapse navbar-collapse" id="navbarNav">
@@ -25,9 +26,18 @@
     </div>
 </nav>
 <script type="text/javascript">
+    const defaultAction = "lireAuteurs";
     const urlParams = new URLSearchParams(window.location.search);
-    let links = document.querySelectorAll('a[href="?action='+urlParams.get("action")+'"]');
+    if (urlParams.get("action") != null) {
+        setActiveLink(urlParams.get("action"));
+    } else {
+        setActiveLink(defaultAction);
+    }
+
+    function setActiveLink(actionName) {
+        let links = document.querySelectorAll('a[href="?action=' + actionName + '"]');
         for (let i = 0; i < links.length; i++) {
             links[i].classList.add("active");
         }
+    }
 </script>
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