Element-ui框架Tree树形控件切换高亮显示选中效果

                

废话不多说，直接上代码

<template>
    <div class="warpper">
        <el-tree ref="tree" :data="TreeData" node-key="id" :key="treeKey" current-node-key :props="defaultProps" highlight-current @node-click="handleNodeClick"></el-tree>
    </div>
</template>
    
<script>
    export default {
        data() {
            return {
                ParmentData: null,
                TreeData: [
                    { 
                        id: 1, 
                        label: '一级 1', 
                        children: [
                            { 
                                id: 4, 
                                label: '二级 1-1', 
                                children: [
                                    { id: 9, label: '三级 1-1-1' }, 
                                    { id: 10, label: '三级 1-1-2' }
                                ] 
                            }
                        ] 
                    }, {
                        id: 2, 
                        label: '一级 2', 
                        children: [
                            { 
                                id: 5, 
                                label: '二级 2-1' 
                            }, { 
                                id: 6, 
                                label: '二级 2-2' 
                            }
                        ] 
                    }, { 
                        id: 3, 
                        label: '一级 3', 
                        children: [
                            { 
                                id: 7, 
                                label: '二级 3-1' 
                            }, { 
                                id: 8, 
                                label: '二级 3-2' 
                            }
                        ],
                        show: true
                    }],
                defaultProps: {
                    children: 'children',
                    label: 'label'
                },
                treeKey:'', 
            }
        },
        created() {
            this.$nextTick(function(){
                this.$data.TreeData.forEach(row => {
                    if(row.show){                    
                        this.$refs.tree.setCurrentKey(row.id);
                        this.$refs.tree.store.nodesMap[row.id].expanded = true;
                    }
                })
            })
        },
        methods: {
            handleNodeClick: function (data,checked) {
                // 点击事件
            },
            handleCheckChange(data, checked, indeterminate) {
                console.log(data, checked, indeterminate);
            },
        }
    }
</script>
    
<style scoped>
 .warpper .el-tree--highlight-current /deep/ .el-tree-node.is-checked > .el-tree-node__content {
    background-color: rgb(255, 255, 255);
    color:rgb(64, 158, 255);
  }
 .warpper .el-tree--highlight-current /deep/ .el-tree-node.is-current > .el-tree-node__content {
    background-color: rgb(255, 255, 255);
    color:rgb(64, 158, 255);
  }
</style>