How to append button into popup in leaflet draw?

Question

I want button inside popup to make some action on popup attached layer.

 L.marker(coors[i], { icon })
          .addTo(this.drawnItem)
          .bindPopup(this._getCustomIcon(mix))
          .openPopup();

Below my _getCustomIcon()

 _getCustomIcon = value => {
    let delLayer = document.createElement("BUTTON");
    delLayer.innerHTML = "Delete";
    let CustomPopup = L.popup({ className: "customPopup" }).setContent(
      `<p> ${value}</p> ${delLayer}` //here is error
    );
    return CustomPopup;
  };

Answer 1

Just use this code

 _getCustomIcon = value => {
    let delLayer = document.createElement("BUTTON");
    delLayer.innerHTML = "Delete";
    return delLayer;
  };

Your mistake is creating a popup after using bindPopup which already creates popup!