//数组改写成树状结构
let list =[
{id:1,name:'部门A',parentld:0},
{id:2,name:'部门B',parentld:4},
{id:3,name:'部门C',parentld:1},
{id:4,name:'部门D',parentld:0},
{id:5,name:'部门E',parentld:2},
{id:6,name:'部门F',parentld:3},
{id:7,name:'部门G',parentld:2},
{id:8,name:'部门H',parentld:4}]
<html>
<script>
let list = [
{ id: 1, name: '部门A', parentld: 0 },
{ id: 2, name: '部门B', parentld: 4 },
{ id: 3, name: '部门C', parentld: 1 },
{ id: 4, name: '部门D', parentld: 0 },
{ id: 5, name: '部门E', parentld: 2 },
{ id: 6, name: '部门F', parentld: 3 },
{ id: 7, name: '部门G', parentld: 2 },
{ id: 8, name: '部门H', parentld: 4 }
]
let listTree = []
list.map(ele => {
if (ele.parentld === 0) {
listTree.push(ele)
}
})
list = list.filter(ele=>{
return ele.parentld!==0
})
listTree.map(ele=>{
changeList(ele,ele.id)
})
function changeList(item, id) {
if(list.length==0)return
item.chilren = []
let currId= []
list.map(ele=>{
if(ele.parentld===id){
item.chilren.push(ele)
currId.push(ele.id)
}
})
list = list.filter(ele=>{
return !currId.includes(ele.id)
})
if(item.chilren.length>0){
item.chilren.map(self=>{
changeList(self,self.id)
})
}
}
console.log(listTree)
</script>
</html>
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