$(function () {
    var returnsValue; // Type:  any
    // Parameters
    var node; // Type:  undefined
    var position; // Type:  number
    
    returnsValue = $(".selector").wijtree("add", node, position);
});

function add( 
   node : undefined,
   position : number
) : any;

Parameters

node

1.markup html.such as "<li><a>node</a></li>" as a node. 2.wijtreenode widget. 3.object options according to the options of wijtreenode. 4.node's text.

position

The position to insert at.

Reference

wijtree type
wijtree jQuery Widget