fix

@@ -17,9 +17,10 @@ $('#brand label').on('click', function() {
     }
 });
 $(document).on('click', '#brand_container .nav span', function() {
+    var yh_channel = $(this).attr('yh_channel');
+
     $('#brand_container .nav span').removeClass('focus');
     $(this).addClass('focus');
-    let yh_channel = $(this).attr('yh_channel');
 
     getBrandList($(this).attr('_index'), yh_channel);
 });