修复banenr高度为0

app/code/Joshine/Banner/view/frontend/templates/index.phtml

@@ -53,12 +53,13 @@ require(['jquery','banner'],function ($){
             h_max = h > h_max ? h : h_max;
         });
 
-        $('.banner1').height(h_max);
-        $('.banner1').css('line-height',h_max+'px');
-        var buttonTop = h_max/2;
-        $('#left').css({'top':buttonTop,'line-height': 0});
-        $('#right').css({'top':buttonTop,'line-height': 0});
-
+        if (h_max > 0){
+            $('.banner1').height(h_max);
+            $('.banner1').css('line-height',h_max+'px');
+            var buttonTop = h_max/2;
+            $('#left').css({'top':buttonTop,'line-height': 0});
+            $('#right').css({'top':buttonTop,'line-height': 0});
+        }
         if (img_arr.length <= 1){
             $('.banner1 .list').hide();
             $('#left').hide();