javascript - Get parent node in custom section tree -

i have multi level tree in custom-section of umbraco 7, root node country.

• denmark
  • item 1
  • item 2
• sweeden
  • item 1
  • item 2
• norway
  • item 1
  • item 2

now, when working item 2 of denmark, node-id of root-node (denmark) know country id i'm working under.

is there javascript api recurse on node levels, , top-most expanded?

thanks in advance. jonas

what did use editorstate
(i'm running umbraco 7.5.7)

angular.module("umbraco").controller("client.controller",   function ($scope, editorstate) {      // rootnode out of path.     var rootnode = editorstate.current.path.split(",")[1]; }); 

since path contains entire structure current node located, second first node root node.

---

another solution might this:
(haven't tested myself)
https://our.umbraco.org/forum/developers/extending-umbraco/73796-how-to-get-the-parentid-of-the-current-node-in-custom-tree-using-angularjs

which in simple way states:

inject appstate , treeservice angular controller

this top node of current tree:
var rootnode = appstate.gettreestate("currentrootnode");

this current selected node in custom tree
var selectednode = appstate.gettreestate("selectednode");