ztree getNodeByTId 方法问题?报错

@zTree 你好，想跟你请教个问题：

首先ztree配置：

setting = {
view: {
showLine: false
},
check: {
enable: true,
chkboxType:{ "Y" : "ps", "N" : "s" } // 被勾选时关联父和子  ; 取消勾选时，不勾选父节点
},
data: {
simpleData: {
enable: true,
idKey:"id",
pIdKey:"parentId",
rootPid:-1
}
}
};

 getNodeByTId 这个方法感觉有问题，

当后台取得tree数据

[{"id":1,"parentId":-1,"name":"系统管理","open":true},{"id":2,"parentId":1,"name":"用户管理"},{"id":3,"parentId":2,"name":"新增用户"},{"id":4,"parentId":2,"name":"编辑用户"},{"id":5,"parentId":2,"name":"删除用户"},{"id":6,"parentId":1,"name":"角色管理"},{"id":7,"parentId":6,"name":"新增角色"},{"id":8,"parentId":6,"name":"删除角色"},{"id":9,"parentId":6,"name":"配置用户"},{"id":10,"parentId":6,"name":"配置权限"},{"id":11,"parentId":1,"name":"权限管理"},{"id":12,"parentId":-1,"name":"枚举类型管理","open":true},{"id":13,"parentId":12,"name":"枚举类型管理"},{"id":14,"parentId":13,"name":"新增枚举类型"},{"id":15,"parentId":13,"name":"修改枚举类型"},{"id":16,"parentId":13,"name":"删除枚举类型"},{"id":17,"parentId":-1,"name":"元件分类管理","open":true},{"id":18,"parentId":17,"name":"元件分类管理"},{"id":19,"parentId":18,"name":"新增特有属性"},{"id":20,"parentId":18,"name":"编辑特有属性"},{"id":21,"parentId":18,"name":"删除特有属性"},{"id":22,"parentId":-1,"name":"元件管理","open":true},{"id":23,"parentId":22,"name":"元件管理"},{"id":24,"parentId":23,"name":"元件导入"},{"id":25,"parentId":23,"name":"元件导出"},{"id":501,"parentId":-1,"name":"流程管理","open":true},{"id":502,"parentId":501,"name":"元件申请流程"},{"id":503,"parentId":502,"name":"新建元件申请流程"},{"id":504,"parentId":501,"name":"接插件申请流程"},{"id":505,"parentId":504,"name":"新建设备接插件申请流程"},{"id":506,"parentId":501,"name":"元件更改流程"},{"id":507,"parentId":506,"name":"新建元件更改流程"},{"id":508,"parentId":501,"name":"设备接插件更改流程"},{"id":509,"parentId":508,"name":"新建设备接插件更改流程"},{"id":510,"parentId":501,"name":"流程审批"},{"id":511,"parentId":510,"name":"元件审批"},{"id":512,"parentId":510,"name":"设备接插件审批"},{"id":513,"parentId":510,"name":"元件更改审批"},{"id":514,"parentId":510,"name":"设备接插件更改审批"},{"id":601,"parentId":-1,"name":"版本管理","open":true},{"id":602,"parentId":601,"name":"元件版本管理"},{"id":603,"parentId":602,"name":"删除元件版本"},{"id":604,"parentId":601,"name":"设备接插件版本管理"},{"id":605,"parentId":604,"name":"删除设备接插件版本"},{"id":701,"parentId":0,"name":"保存列"}]

当调用getNodeByTId 如：zTree.getNodeByTId("501")取得为null;

所以zTree.checkNode（node，。。。）报错

而如果id是连续的不报错 ， 这是为什么 求解？ 是我代码问题还是？