工具函数

/**
 * 获取这个节点的父级及祖先节点
 **/
function findAllParent (node, tree, parentNodes = [], index = 0) {
    if (!node || node.parentCode === 0) {
      return
    }
    findParent(node, parentNodes, tree)
    let parentNode = parentNodes[index]
    findAllParent(parentNode, tree, parentNodes, ++index)
    return parentNodes
  }
  
  function findParent (node, parentNodes, tree) {
    for (let i = 0; i < tree.length; i++) {
      let item = tree[i]
      if (item.orgCode === node.parentCode) {
        parentNodes.push(item)
        return
      }
      if (item.children && item.children.length > 0) {
        findParent(node, parentNodes, item.children)
      }
    }
  }