Leaflet L.Icon marker not removing on Map reload - leaflet

Question

Map contains two types of markers
Circle icon is added by:
let circle = new customCircleMarker([item.latitude, item.longitude], {
color: '#2196F3',
fillColor: '#2196F3',
fillOpacity: 0.8,
radius: radM,
addressId: item.address_id
}).bindTooltip(`Address: <b>${item.address}</b><br/>
Patients from this address: <b>${item.total_patients}</b><br/>
Production: <b>$${item.total_production}</b><br/>`)
.addTo(this.mapInstance).on('click', this.circleClick);
Icon marker is added in the following method:
// create marker object, pass custom icon as option, pass content and options to popup, add to map
// create marker object, pass custom icon as option, pass content and options to popup, add to map
L.marker([item.latitude, item.longitude], { icon: chartIcon })
.bindTooltip(`Address: <b>${item.address}</b><br/>
Patients from this address: <b>${item.total_patients}</b><br/>
Production: <b>$${item.total_production}</b><br/>`)
.addTo(this.mapInstance).on('click', this.circleClick);
On clearing map Icon marker is not removed
Map clearing function:
if (this.mapInstance) {
for (let i in this.mapInstance._layers) {
if (this.mapInstance._layers[i]._path !== undefined) {
try {
this.mapInstance.removeLayer(this.mapInstance._layers[i]);
} catch (e) {
console.log('problem with ' + e + this.mapInstance._layers[i]);
}
}
}
}

Answer 1

You're checking for a _path property before removing. It will skip the L.Marker layers because they don't have a _path property, only vector layers (extended from L.Path) do.
If you ever need to delete only certain layer types from your map you are best off by grouping them in a grouping layer like L.LayerGroup or L.FeatureGroup and then using their clearLayers method:
var layerGroup = new L.LayerGroup([
new L.Marker(...),
new L.CircleMarker()
]).addTo(map);
layerGroup.clearLayers();
If that is not an option you could iterate the map's layers and then check the instance of the layer:
function customClearLayers () {
map.eachLayer(function (layer) {
if (layer instanceof L.Marker || layer instanceof L.CircleMarker) {
map.removeLayer(layer);
}
});
}