# el-tree 根据当前路由匹配data中path 高亮 当前高亮的节点展开
<template>
<div class="lzpTree">
<el-tree
ref="tree"
class="tree"
:data="data"
node-key="pid"
:props="defaultProps"
:expand-on-click-node="false"
accordion
:highlight-current="true"
@node-click="handleNodeClick"
>
<template #default="{ node, data }">
<div :class="{ 'selected-node': data === selectedNode }">
{{ node.label }}
</div>
</template>
</el-tree>
</div>
</template>
<script>
export default {
name: "lzpTree",
props: {
/* 树形数据*/
data: {
type: Array,
default: () => [
{
label: "应用中心",
path:'/home/test',
pid: 0,
},
{
label: "授权管理",
pid: 1,
children: [
{
label: "申请接入",
path:'/home/test2',
pid: 11
},
{
label: "我的授权",
path:'',
pid: 12,
},
],
},
{
label: "运营监测",
path:'',
pid: 3,
},
{
label: "用户中心",
pid: 4,
children: [
{
label: "申请接入",
path:'',
pid: 41,
},
{
label: "我的授权",
path:'',
pid: 42,
},
],
},
{
label: "消息通知",
path:'',
pid:5,
},
{
label: "退出登录",
path:'',
pid:6,
}
],
},
},
data() {
return {
/* 当前选中的节点*/
selectedNode:null,
/* 树形控件默认配置*/
defaultProps: {
children: "children",
label: "label",
},
};
},
mounted() {
// 根据当前路由匹配data中path 高亮 data有可能是一维数组也有可能是二维数组
let path = this.$route.path;
let data = this.data;
let selectedNode = null;
for(let i = 0; i < data.length; i++){
if(data[i].path === path){
selectedNode = data[i];
break;
}else if(data[i].children){
for(let j = 0; j < data[i].children.length; j++){
if(data[i].children[j].path === path){
selectedNode = data[i].children[j];
break;
}
}
}
}
this.selectedNode = selectedNode;
// 当前高亮的节点展开
if(selectedNode){
// 一定要在组件上设置 node-key="pid"
let node = this.$refs.tree.getNode(selectedNode.pid);
this.expandNode(node);
}
},
methods: {
/* 点击节点*/
handleNodeClick(data,node) {
// console.log('********************',data,node);
this.selectedNode = data;
if(data.path){
this.$router.push(data.path);
}
},
/* 展开节点*/
expandNode(node) {
console.log('expandNode',node);
if (node) {
/* 展开节点*/
node.expanded = true;
/* 判断还有没有父节点 有的话就展开父节点*/
if (node.parent) {
this.expandNode(node.parent);
}
this.$forceUpdate();
}
}
},
};
</script>
<style lang="less">
.lzpTree .tree > .el-tree-node{
margin-bottom: 40px;
}
.el-tree-node__children > .el-tree-node{
margin-top: 30px;
}
</style>
<style lang="less" scoped>
.selected-node {
color: #1684FC;
font-size: 16px;
font-weight: 400;
}
.lzpTree {
width: 100%;
height: 100%;
padding: 30px 40px;
.tree{
/deep/ .el-tree-node__label{
font-size: 16px;
font-weight: 400;
color: #333333;
}
/deep/ .el-tree-node__children .el-tree-node{
margin-top: 30px;
}
/deep/ .el-tree-node:focus > .el-tree-node__content {
// background-color: #bfa !important;
// color: #1684FC !important;
background-color: #ffffff !important;
}
/deep/.el-tree-node__content:hover {
background-color: #ffffff !important;
color: #1684FC !important;
.el-tree-node__label{
color: #1684FC !important;
}
}
}
}
</style>
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