implemented preview of article markdown via AJAX

functions/article_functions.php

@@ -92,12 +92,6 @@ function article_page_from_markdown($article_id)
     $parsedown = new Parsedown();
     $parsedown->setSafeMode(true);
     $article_content = $parsedown->text($markdown);
-    $article_toc = '';
-
-    $lines = preg_split("/\r\n|\n|\r/", $article_content);
-    foreach ($lines as $line)
-        if (str_contains($line, '<h4>'))
-            $article_toc .= '<p>' . extract_content_from_tag($line, '<h4>', '</h4>') . '</p><br>';
 
     $html = '
         <div class="article">
@@ -116,14 +110,9 @@ function article_page_from_markdown($article_id)
                 </div>
             </div>
             <div class="line" style="margin-bottom: 15px;"></div>
-            <div class="article_grid">
-                <div class="article_toc">
-                    ' . $article_toc . '
-                </div>
                 <div class="article_content">
                     ' . $article_content . '
                 </div>
-            </div>
         </div>
     ';