Display label in center of Circle permanently

[markon1]

I want to display an label always in center of circle. This is my code, but no label is being displayed, only circle.

var marker = L.circle([d.lat, d.long], radius,{color: "red", weight: 0,fillOpacity: opacity,fillColor:"red"}).bindLabel("label", { noHide: true }).addTo(map);
map.addLayer(marker);

I have included scripts like this:

<script src="http://cdn.leafletjs.com/leaflet-0.7.2/leaflet.js"></script>
<script type="text/javascript" src="js/leaflet.label.js"></script>

[kumarage]

Refer to this link:

https://stackoverflow.com/questions/48872298/add-static-labels-to-circle-markers-in-leaflet

[aybarska]

You need to include tooltip js first.
<script type="text/javascript" src="/path/to/leaflet-tooltip-layout.js"></script>

And if you want this to be always centered. You should add 'direction: center' to attirbutes. Like this:
circle.bindTooltip('label', {permanent: true, className: "durak_label",direction: 'center', offset: [0, 0] });

Check out here.
https://github.com/ZijingPeng/leaflet-tooltip-layout