Leaflet markere is not accept Draggable feature

I find that, may I have to use Leaflet.marker(e.latlng, {'draggable':true} ).addTo(map); , now marker is draggable but the circle is not dragging with maker(it is not binded with marker) another question is how to read dragged marker position. in qoogle there was a ‘draggend’ event listener.