Obtain Coordinates of Polygon Corners

[Vzzarr]

According to our project, we would like to know the coordinates of the polygon corners while the user is drawing it, in particular on click event on the map; so we would like to use this code of the library Leaflet JS or something similar:

L.ClickHandler = L.Handler.extend({
  addHooks: function() {
    L.DomEvent.on(document, 'click', this._captureClick, this);
  },
 
  removeHooks: function() {
    L.DomEvent.off(document, 'click', this._captureClick, this);
  },
  _captureClick: function(event) {
    latElong = mymap.mouseEventToLatLng(event)
  alert(mymap.mouseEventToLatLng(event))
  return latElong
  }
});
 
L.Map.addInitHook('addHandler', 'click', L.ClickHandler);
 
var mymap = L.map('mapid', {
  click: true
}).setView([51.505, -0.09], 13);

and obtaining a similar result:

Our question is: where could we insert this function in your project? Where and how is defined the map in your project?

Thank you for your attention
Best regards,
Nicholas