vue数据结构图以及修改element样式

<template>
  <div class="weChatToken">
      <el-tree
        :props="defaultProps"
        :data="treeData"
        :expand-on-click-node="false"
      >
        <span class="custom-tree-node" slot-scope="{ node, data }">
          <span>{{ node.label }}</span>
          <span style="margin-left:15px;">
            <el-button type="text" size="small" @click="() => append(data)">
              <i class="el-icon-plus"></i>
            </el-button>
            <el-button type="text" size="small" @click="() => remove(data,node)">
              <i class="el-icon-delete"></i>
            </el-button>
            <el-button type="text" size="small" @click="() => modify(data)">
              <i class="el-icon-edit"></i>
            </el-button>
          </span>
        </span>
      </el-tree>
  </div>
</template>

<script>
export default {
  data() {
    return {
      defaultProps: {
        children: 'children',
        label: 'label'
      },
      treeData: [],
      defaultExpandedKeys: [],
    };
  },
  methods: {
    // 请求接口数据
    query() {
      this.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'
        }]
      }];
    },
    // 添加
    append(data) {
      console.log(data);
    },
    // 删除
    remove(node, data) {
      console.log(node, data);
    },
    // 编辑
    modify(data) {
      console.log(data);
    },
  },
  created() {
    this.query();
  }
};
</script>

<style lang="less" scoped>
.weChatToken{
  /deep/ .el-tree-node{
    position: relative;
    padding-left: 16px;
  }
  /deep/ .el-tree-node__children{
    padding-left: 16px;
  }
  /deep/ .el-tree-node:last-child:before {
    height: 38px;
  }
  /deep/ .el-tree>.el-tree-node:before{
    border-left: none;
  }
  /deep/ .el-tree>.el-tree-node:after{
    border-top: none;
  }
  /deep/ .el-tree-node:before,/deep/ .el-tree-node:after{
    content: "";
    left: -4px;
    position: absolute;
    right: auto;
    border-width: 1px;
  }
  /deep/ .tree:first-child .el-tree-node:before{
    border-left: none;
  }
  /deep/ .el-tree-node:before {
    border-left: 1px solid #4386c6;
    bottom: 0px;
    height: 100%;
    top: -25px;
    width: 1px;
  }
  /deep/ .el-tree-node:after {
    border-top: 1px solid #4386c6;
    height: 20px;
    top: 12px;
    width: 24px;
  }
  /deep/ .el-tree-node__content{
    padding-left: 0px !important;
  }
  /deep/ .el-tree-node__content>.el-tree-node__expand-icon {
      padding: 3px;
  }
}
</style>