1. //从后台获取的对象数组，根据对象的type进行分组合并成tree树形展示数据
    2. const dataArr = [
    3.   { type: '治理层', name: 'hive_82', reserve: '2', id: 1 },
    4.   { type: '原始数据层', name: 'qwe', reserve: '1', id: 2 },
    5.   { type: '贴源层', name: 'mysql_exchangis', reserve: '3', id: 3 },
    6.   { type: '治理层', name: 'links_188', reserve: '1', id: 4 },
    7.   { type: '贴源层', name: 'mysql_ces', reserve: '2', id: 5 }
    8. ]
    9. const treeData = dataArr.reduce((cur, next) => {
    10.   const obj = cur.find(curItem => curItem.label === next.type)
    11.   if (obj) {
    12.     if (obj.children.indexOf(next.id) === -1) { //去重处理
    13.       // console.log(obj.children.indexOf(next.id))
    14.       obj.children.push({
    15.         ...next,
    16.         label: next.name
    17.       })
    18.     }
    19.   } else {
    20.     const newObj = {
    21.       label: next.type,
    22.       children: [{
    23.         ...next,
    24.         label: next.name
    25.       }]
    26.     }
    27.     cur.push(newObj)
    28.   }
    29.   return cur
    30. }, [])
    32. console.log(treeData)
    34. // 合并后的结果：
    35. let resultData = [
    36.   {
    37.     label: '治理层',
    38.     children: [
    39.       { type: '治理层', name: 'hive_82', reserve: '2', id: 1, label: 'hive_82' },
    40.       { type: '治理层', name: 'links_188', reserve: '1', id: 4, label: 'links_188' }
    41.     ]
    42.   },
    43.   {
    44.     label: '原始数据层',
    45.     children: [
    46.       { type: '原始数据层', name: 'qwe', reserve: '1', id: 2, label: 'qwe' }
    47.     ]
    48.   },
    49.   {
    50.     label: '贴源层',
    51.     children: [
    52.       { type: '贴源层', name: 'mysql_exchangis', reserve: '3', id: 3, label: 'mysql_exchangis' },
    53.       { type: '治理层', name: 'mysql_ces', reserve: '2', id: 5, label: 'mysql_ces' }
    54.     ]
    55.   }
    56. ]
    59. // let list = [{name:'wxq'},{name:'wxq1'}]
    60. // console.log(list.indexOf({name:'wxq'})