Just discovered Leafletjs and loving it. I have been trying to remove all my makers when my json is empty or invalid and I just cant get it right. All the different approches I have tried blink/flash every time my json updates and this is the closest I have managed to get.
Any help would be greatfull. I am taken back at how little examples there are of makers moving and updating without blinking.... and I really dont want to use google maps!
I tried to reset the makers = {}; but this did nothing. Thank you
data.BMS.forEach(function (obj) {
if (obj.lat !== undefined && obj.lng !== undefined) {
if (!markers.hasOwnProperty(obj.id)) {
markers[obj.id] = new L.Marker([obj.lat, obj.lng], {icon: panicNormal}).addTo(map) .bindTooltip(obj.name,
{
permanent: true,
direction: 'top',
offset: [0, 0]
});
markers[obj.id].previousLatLngs = [];
areaBounds.push([obj.lat, obj.lng]);
} else {
areaBounds.push([obj.lat, obj.lng]);
markers[obj.id].previousLatLngs.push(markers[obj.id].getLatLng());
if(obj.status == "TRUE"){
markers[obj.id].setIcon(panicAlarm);
}else{
if(obj.type == "MO"){
markers[obj.id].setIcon(panicNormal);
}else{
markers[obj.id].setIcon(lora);
}
}
markers[obj.id].setLatLng([obj.lat, obj.lng]);
}
}else{
//How do I remove the markers
}
});
You can use L.FeatureGroup() to add all markers to it and then remove all markers with .clearLayers()
var fg = L.featureGroup().addTo(map);
...
markers[obj.id] = new L.Marker([obj.lat, obj.lng], {icon: panicNormal}).addTo(fg) .bindTooltip
...
}else{
//How do I remove the markers
fg.clearLayers();
}