樹結構遍歷節點名字提取，這里提取的是el-tree數據結構，封裝成函數

/**
 * 樹形數據提取節點
 * @param {*} data
 */
export function treeDataGetnode (data) {
  var res = []
  var child=function(v){
     if(typeof(v.children)!='undefined' && v.children.length>0){
       for(var i=0;i<v.children.length;i++){
         res.push(v.children[i].orgname)
         child(v.children[i])
       }
     }
   }
  for(var k = 0; k < data.length; k++) {
    res.push(data[k].orgname)
    if(typeof(data[k].children)!='undefined' && data[k].children.length>0){
      child(data[k])
    }
  }
  let set = Array.from(new Set(res));
  return setRes
}