优化pjax刷新

themes/Ying/layouts/_default/single.html

@@ -25,18 +25,17 @@
         </div>
 
         <script>
-        document.addEventListener('DOMContentLoaded', function() {
+        function initPostScrollspy() {
             var content = document.getElementById('post-writing');
             if (!content) return;
-            // 滚动时内容从下方淡入，符合"往下看"的直觉
             content.querySelectorAll('h2, h3, h4, p, ul, ol, blockquote, table').forEach(function(el) {
-                el.setAttribute('uk-scrollspy', 'cls: uk-animation-fade; delay: 60');
+                if (!el.hasAttribute('uk-scrollspy')) el.setAttribute('uk-scrollspy', 'cls: uk-animation-fade; delay: 60');
             });
-            // 图片/视频/链接卡片稍微带点位移，更有"出现感"
             content.querySelectorAll('figure, img, .post-video, .link-card').forEach(function(el) {
-                el.setAttribute('uk-scrollspy', 'cls: uk-animation-slide-bottom-small; delay: 100');
+                if (!el.hasAttribute('uk-scrollspy')) el.setAttribute('uk-scrollspy', 'cls: uk-animation-slide-bottom-small; delay: 100');
             });
-        });
+        }
+        document.addEventListener('DOMContentLoaded', initPostScrollspy);
         </script>