zTree經過指定ID找到節點並選中

zTree = $.fn.zTree.getZTreeObj("treeDemo");//treeDemo界面中加載ztree的div
var node = zTree.getNodeByParam("id",pid );
zTree.cancelSelectedNode();//先取消全部的選中狀態
zTree.selectNode(node,true);//將指定ID的節點選中
zTree.expandNode(node, true, false);//將指定ID節點展開