扁平数组转树结构
<!DOCTYPE html>
<html lang="en">
<head>
<title></title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<script>
let list = [{
"id": 1,
"title": "首页",
"parentId": 0,
},
{
"id": 3,
"title": "权限管理",
"parentId": 2,
},
{
"id": 4,
"title": "页面管理",
"parentId": 3,
},
{
"id": 5,
"title": "适用组件",
"parentId": 0,
},
{
"id": 6,
"title": "json编辑器",
"parentId": 5,
},
{
"id": 7,
"title": "富文本编辑器",
"parentId": 5,
},
{
"id": 2,
"title": "系统管理",
"parentId": 0,
},
{
id: 8,
"title": "组件管理",
"parentId": 4
}
]
function setTree(list) {
return list.filter((item) => {
let children = list.filter((child) => {
return item.id == child.parentId
})
if (children.length > 0) {
item['children'] = children
}
return item['parentId'] == 0
})
}
console.log(setTree(list));
</script>
</body>
</html>
转换前
转换后
