js根据父id获取树结构中，获取父级数据

 getParterData(arr: any, fatherCode: any): any {
        for (const elm of arr) {
            if (elm.code === fatherCode) {
                return elm;
            }
            if (elm.children && elm.children.length > 0) {
                const findChildren = this.getParterData(elm.children, fatherCode);
                if (findChildren && findChildren.code) return findChildren;
            }
        }
        return [];
    }
/// fatherCode是父id,this.cityList是父结构数据
   let getData = this.getParterData(this.cityList, fatherCode);