ztree获取当前选中节点子节点id集合的方法

function getChildNodes(treeNode) {
     var childNodes = ztree.transformToArray(treeNode);
     var nodes = new Array();
     for(i = 0; i < childNodes.length; i++) {
          nodes[i] = childNodes[i].id;
     }
     return nodes.join(",");
}