added button to add a random title to titles page

site/public/titles.php

@@ -11,6 +11,7 @@ include '../solr.php';
 
 $core = 'all';
 $random_titles = ten_random_titles($core);
+$additional_titles = ten_random_titles($core);
 
 ?>
 
@@ -29,6 +30,8 @@ $random_titles = ten_random_titles($core);
   <div class="container">
 
     <button class="float-end btn btn-danger" onclick="removeRandomTitle()">-</button>
+    <button class="float-end btn btn-danger" onclick="addRandomTitle()">+</button>
+
 <?php
 
 foreach ($random_titles as $record_array):
@@ -56,8 +59,26 @@ foreach ($random_titles as $record_array):
 <?php
 endforeach;
 ?>
+  <span class="add_title">
+  </span>
+
   </div>
   <script>
+
+    var titles = <?php echo json_encode($additional_titles); ?>;
+
+    x = 0;
+
+    function addRandomTitle(){
+      var record_array = titles[x];
+      let title = "";
+      for (const id in record_array) {
+        title += record_array[id];
+        document.querySelector('.container').innerHTML += "<a href='id_search.php?id=" + id + "&core=all'><span class='title'>" + title + "</span></a><br><br><hr>";
+        x++;
+      }
+    }
+
     function removeRandomTitle() {
       var elts = document.getElementsByClassName("title");
       var RandomSpan = elts[Math.floor(Math.random() * elts.length)];