如果文章中没有标题属性，则不创建TOC

plugins/GmeekTOC.js

@@ -2,9 +2,15 @@ function createTOC() {
     var tocElement = document.createElement('div');
     tocElement.className = 'toc';
     var contentContainer = document.getElementById('content');
-    contentContainer.prepend(tocElement);
+    
     const headings = contentContainer.querySelectorAll('h1, h2, h3, h4, h5, h6');
+    
+    if (headings.length === 0) {
+        return;  // 如果没有标题元素，则不创建TOC
+    }
+    
     tocElement.insertAdjacentHTML('afterbegin', '<div class="toc-title">文章目录</div>');
+    
     headings.forEach(heading => {
         if (!heading.id) {
             heading.id = heading.textContent.trim().replace(/\s+/g, '-').toLowerCase();
@@ -16,10 +22,11 @@ function createTOC() {
         link.style.paddingLeft = `${(parseInt(heading.tagName.charAt(1)) - 1) * 10}px`;
         tocElement.appendChild(link);
     });
+    
     tocElement.insertAdjacentHTML('beforeend', '<a href="#" class="toc-end" onclick="window.scrollTo({top:0,behavior: \'smooth\'});">Top</a>');
+    contentContainer.prepend(tocElement);
 }
 
-
 document.addEventListener("DOMContentLoaded", function() {
     createTOC();
     var css = `
@@ -89,4 +96,4 @@ document.addEventListener("DOMContentLoaded", function() {
     };
 
     console.log("\n %c GmeekTOC Plugins https://github.com/Meekdai/Gmeek \n","padding:5px 0;background:#C333D0;color:#fff");
-});
+});