关于easyui Tree取得选中节点的父级节点(得到选取实心圆点的id)

            var nodes = $('#tt').tree('getChecked', 'indeterminate');
            var nodes1 = $('#tt').tree('getChecked');
            var s = '';
            for (var i = 0; i < nodes.length; i++) {
                if (nodes[i].id != 0) {
                    if (s != '') s += ',';
                    s += nodes[i].id;
                }
            }
            for (var i = 0; i < nodes1.length; i++) {
                if (nodes1[i].id != 0) {
                    if (s != '') s += ',';
                    s += nodes1[i].id;
                }
            }
            alert(s);