js 寻找节点的所有父级元素

deptList树状结构（每一项有parentID）
element该节点

 loop(deptList , element){
    var arrRes = [];
    if (deptList.length == 0) {
        if (!!element) {
            arrRes.unshift(deptList)
        }
        return arrRes;
    }
    let rev = (data, nodeId) => {
        for (var i = 0, length = data.length; i < length; i++) {
            let node = data[i];
            if (node.key == nodeId) {
                arrRes.unshift(node)
                rev(deptList, node.parentId);
                break;
            } else {
                if (!!node.children) {
                    rev(node.children, nodeId);
                }
            }
        }
        return arrRes;
    };
    arrRes = rev(deptList, element);
    return arrRes;
  }