Highlight effects for L.marker.
npm install leaflet.marker.highlight --saveHighlight effects will occur in the situation that you put your mouse over the marker.
You can set it when initializing a marker.
var marker1 = L.marker([51.5, -0.09], {highlight: 'temporary'}).addTo(map);Or you can use a method to enable the highlight effects.
marker1.enableTemporaryHighlight();marker1.disableTemporaryHighlight();Highlight effects are always on.
var marker1 = L.marker([51.5, -0.09], {highlight: 'permanent'}).addTo(map);or
marker1.enablePermanentHighlight();Cancel the marker highlight effects by
marker1.disablePermanentHighlight();