- var data = $(this).data();
- if (layer === data.layer && zoom >= data.zoomMin && zoom <= data.zoomMax) {
- $(this).show();
- } else {
- $(this).hide();
- }
+ const data = $(this).data();
+ $(this).toggle(
+ layerId === data.layer &&
+ (!data.zoomMin || zoom >= data.zoomMin) &&
+ (!data.zoomMax || zoom <= data.zoomMax)
+ );