How to save selected tree view node id in action link

Question

How to save selected tree view node id in action link  using jquery

 i have tried

 

 

$(".treeview a").on("click", function () {

$.ajax({

url: '@Url.Action("GetTreeViewID", "Treeview", new { Eid=Model.FirstOrDefault().EmpID})'

});

});

 

am getting first treeview node id, if i remove firstofdefault am getting error 

 

but how to save selected node id in Eid