fix js

@@ -1178,6 +1178,11 @@ function loadComment() {
     $('.comments ul').on('click', 'a', function() {
         var $this = $(this);
         var href = $this.data('page');
+
+        if (!href) {
+            return;
+        }
+
         var data = href.split('?')[1].split('&');
         var result = data.map(function(i) {
             return i.split('=')[1];