Count Features using WFST-Leaflet

Question

I have basic point data and I want to count the number of points in the data. I am displaying the data using WFST-Leaflet since I need to also apply filters and this plugin seems like the cleanest method.

const wfstPointOptions = {
    crs: L.CRS.EPSG4326,
    showExisting: true,
    geometryField: 'geom',
    url: 'http://localhost:8080/geoserver/HEC/wfs',
    typeNS: 'HEC',
    typeName: 'Universities',
    maxFeatures: 100,
    opacity: 1,
    style: function(layer) {
        return {
            color: 'purple',
            weight: 1
        }
    },
};

const wfstPoint = new L.WFST(wfstPointOptions, new L.Format.GeoJSON({
    crs: L.CRS.EPSG4326,
    pointToLayer(geoJsonPoint, latlng) {
        const layer = new L.CircleMarker(latlng, {
            radius: 5,
        });
        
    return layer;
    },
}));

wfstPoint.addTo(map);

How do I count the number of features in this layer?

Answer 1

L.WFST layer fires load event when all features are loaded, so you just have to catch the event and get number of layers from event object (assuming all features are points):

wfstPoint.on('load', function(evt) {
  console.log('Points: ', evt.layers.length);
});