not save marker icon class when zoom

• Leaflet version 0.77
• Leaflet.MarkerCluster version 0.72
• Browser (with version) I’m using: all (ex. chrome 55.0.2883.87 (64-bit))
• OS/Platform (with version) I’m using: Ubuntu 16.04

I am using markercluster plugin step 1 I create marker

var marker = L.marker(
                    [this.lat, this.lon],
                    {icon: icon, zIndexOffset: 100, 
                    riseOnHover: true}
                );

step 2 Add marker to clustering

step 3 Wnen click to marker, i add className to marker marker._icon.className = marker._icon.className + ' visited';

the className will change(will add ‘visited’ className)

step 4. zoom ‘-’ in map, marker’s icons hide in map and clustering icon is show step 5. zoom ‘+’ in map, clustering icon is hide, marker’s icons is show

But clicked marker will not save new classname ‘visited’

[danzel]

That isn’t a supported way to add classes to icons. That hack won’t work with markercluster as we remove and add markers from the map, when this happens the class will be removed (You can reproduce this by setting the class, removing the marker from the map then re-adding it). You need to change the classes properly if you want them to be maintained.

[danzel]

Use marker.setIcon to change the icon