js实现无限层级树形数据结构(创新算法)
(编辑:jimmy 日期: 2024/12/25 浏览:3 次 )
由于做项目的需要,把一个线性数组转成树形数组,在网上查了很多文章,觉得他们写的太复杂了,于是自己写了一个,在折腾了一下午终于把它写出来啦(激动.gif),用两个filter过滤器就搞定了,代码简洁明了,数据结构小白都能看懂。
js代码:把扁平数据转成树形数据
function setTreeData(source){ let cloneData = JSON.parse(JSON.stringify(source)) // 对源数据深度克隆 return cloneData.filter(father=>{ // 循环所有项,并添加children属性 let branchArr = cloneData.filter(child=> father.id == child.parentId); // 返回每一项的子级数组 branchArr.length>0 "htmlcode">上一篇:javascript将扁平的数据转为树形结构的高效率算法function treeData(source, id, parentId, children){ let cloneData = JSON.parse(JSON.stringify(source)) return cloneData.filter(father=>{ let branchArr = cloneData.filter(child => father[id] == child[parentId]); branchArr.length>0 "text-align: center">vue组件:
<template> <el-tree :data="treeData" :props="defaultProps" accordion @node-click="handleNodeClick"> </el-tree> </template> <script> export default { name: "Test", data(){ return { data : [ {id:1,parentId:0,name:"一级菜单A",rank:1}, {id:2,parentId:0,name:"一级菜单B",rank:1}, {id:3,parentId:0,name:"一级菜单C",rank:1}, {id:4,parentId:1,name:"二级菜单A-A",rank:2}, {id:5,parentId:1,name:"二级菜单A-B",rank:2}, {id:6,parentId:2,name:"二级菜单B-A",rank:2}, {id:7,parentId:4,name:"三级菜单A-A-A",rank:3}, {id:8,parentId:7,name:"四级菜单A-A-A-A",rank:4}, {id:9,parentId:8,name:"五级菜单A-A-A-A-A",rank:5}, {id:10,parentId:9,name:"六级菜单A-A-A-A-A-A",rank:6}, {id:11,parentId:10,name:"七级菜单A-A-A-A-A-A-A",rank:7}, {id:12,parentId:11,name:"八级菜单A-A-A-A-A-A-A-A",rank:8}, {id:13,parentId:12,name:"九级菜单A-A-A-A-A-A-A-A-A",rank:9}, {id:14,parentId:13,name:"十级菜单A-A-A-A-A-A-A-A-A-A",rank:10}, ], defaultProps: { children: 'children', label: 'name' } } }, computed:{ treeData(){ let cloneData = JSON.parse(JSON.stringify(this.data)) // 对源数据深度克隆 return cloneData.filter(father=>{ let branchArr = cloneData.filter(child=>father.id == child.parentId) //返回每一项的子级数组 branchArr.length>0 "_blank" href="https://github.com/KBeginner/Coder/blob/v2018/JavaScript/js%E6%A0%91%E5%BD%A2%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/Test.html" rel="external nofollow" >Demo树形数据转成扁平数据,请查看这篇文章:js实现树形数据转成扁平数据
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