Function onDragAdd

src/vuedraggable.js:411–422

(evt)

    },

    onDragAdd(evt) {
      const element = evt.item._underlying_vm_;
      if (element === undefined) {
        return;
      }
      removeNode(evt.item);
      const newIndex = this.getVmIndex(evt.newIndex);
      this.spliceList(newIndex, 0, element);
      this.computeIndexes();
      const added = { element, newIndex };
      this.emitChanges({ added });
    },

    onDragRemove(evt) {
      insertNodeAt(this.rootContainer, evt.item, evt.oldIndex);