Leaflet.js circleMarker transition - leaflet

Question

Does anyone know how I can do transitions in leaflet.js with a circleMarker please?
In older versions (0.7 if I am not mistaken) the following css used to do the trick
.leaflet-clickable {
transition: all .3s;
}
but not anymore. I am using version 1.3.1

Answer 1

Set a custom class on your marker and use it to set your transition. For example:
Using this marker
L.circleMarker([0, 0], {
className: 'circle-transition'
}).addTo(map)
You can have a transition on hover with
.circle-transition:hover {
fill: red;
fill-opacity: 1;
transition: all 1s
}
And a demo
var map = L.map('map').setView([0, 0], 4);
L.circleMarker([0, 0], {
radius: 100,
className: 'circle-transition',
fillOpacity: 0.5
}).addTo(map)
html, body {
height: 100%;
margin: 0;
}
#map {
width: 100%;
height: 100%;
}
#keyframes fadeIn {
from { fill-opacity:0; }
to { fill-opacity:0.5; }
}
.circle-transition {
animation: 1s ease-out 0s 1 fadeIn;
}
.circle-transition:hover {
fill: red;
fill-opacity: 1;
transition: all 1s
}
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.3.4/leaflet.css"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.3.4/leaflet.js"></script>
<div id='map'></div>