根据条件控制el-tree节点显示隐藏

原创 已于 2023-11-23 19:50:56 修改 · 4.7k 阅读 · 5 ·
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#javascript #前端 #html

于 2023-04-25 19:55:13 首次发布
实现el-tree组件根据后台提供的全量数据，前端通过filterNode方法动态控制树形结构中包含特定关键词如VS的节点显示，其他节点隐藏。

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需求：

后台返回el-tree全量数据，前端根据条件控制每个节点显示隐藏

实现：

获取后台数据后，调用this.$refs.componentTree.filter(“VS”);触发filterNode 方法，按照条件控制显示

效果：（条件：只显示name中包含 "VS"的节点，）

在这里插入图片描述

代码：

<template>
  <div style="padding: 20px">
    <el-tree
      ref="componentTree"
      style="height: 100%"
      class="hx-scroll"
      :data="componentTreeData"
      highlight-current
      show-checkbox
      node-key="id"
      :expand-on-click-node="false"
      default-expand-all
      :filter-node-method="filterNode"
      :props="{ label: 'name', children: 'children' }"
    >
    </el-tree>
  </div>
</template>

<script>
export default {
  name: "test",
  data() {
    return {
      componentTreeData: [
        {
          children: [
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011922,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "柱、暗柱VS柱",
                  new: false,
                  orderNo: 2,
                  parentId: 1849351790963362,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "柱,暗柱",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963361,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "柱帽VS柱帽",
                  new: false,
                  orderNo: 3,
                  parentId: 1849351790963362,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "柱帽",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011921,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "构造柱",
                  new: false,
                  orderNo: 4,
                  parentId: 1849351790963362,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "构造柱",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351790963362,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "柱",
              new: false,
              orderNo: 1,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011920,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "混凝土墙VS剪力墙",
                  new: false,
                  orderNo: 6,
                  parentId: 1849351790963360,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "剪力墙",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963391,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "砌体墙VS砌体墙",
                  new: false,
                  orderNo: 7,
                  parentId: 1849351790963360,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "砌体墙",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351790963360,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "墙",
              new: false,
              orderNo: 5,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963390,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "门VS门",
                  new: false,
                  orderNo: 9,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "门",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011918,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "窗VS窗",
                  new: false,
                  orderNo: 10,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "窗",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963389,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "门联窗",
                  new: false,
                  orderNo: 11,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "门联窗",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011917,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "飘窗",
                  new: false,
                  orderNo: 12,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "飘窗",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963388,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "墙洞VS墙洞",
                  new: false,
                  orderNo: 13,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "墙洞",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011916,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "板洞",
                  new: false,
                  orderNo: 14,
                  parentId: 1849351792011919,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "板洞",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351792011919,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "门窗洞",
              new: false,
              orderNo: 8,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011915,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "梁、环梁VS梁",
                  new: false,
                  orderNo: 16,
                  parentId: 1849351790963387,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "梁",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963386,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "连梁",
                  new: false,
                  orderNo: 17,
                  parentId: 1849351790963387,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "连梁",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011914,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "圈梁",
                  new: false,
                  orderNo: 18,
                  parentId: 1849351790963387,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "圈梁",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963385,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "过梁",
                  new: false,
                  orderNo: 19,
                  parentId: 1849351790963387,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "过梁",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011913,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "梯梁VS梁",
                  new: false,
                  orderNo: 20,
                  parentId: 1849351790963387,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "梁",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351790963387,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "梁",
              new: false,
              orderNo: 15,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011912,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "板、加腋板、加强板带VS现浇板",
                  new: false,
                  orderNo: 22,
                  parentId: 1849351790963384,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "现浇板,楼层板带",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351790963384,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "板",
              new: false,
              orderNo: 21,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011911,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "现浇楼梯",
                  new: false,
                  orderNo: 24,
                  parentId: 1849351790963383,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  thirdCommpent: "楼梯",
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
              ],
              count: 0,
              createTime: 1682301810000,
              createdHostIp: "10.1.46.78,10.42.0.0",
              creator: "system",
              creatorId: -1,
              id: 1849351790963383,
              lastOperator: "韦民扬",
              lastOperatorId: 1658858666192897,
              name: "楼梯",
              new: false,
              orderNo: 23,
              projectId: 1774308439969793,
              reportType: 1,
              status: 1,
              type: 1,
              updateHostIp: "10.1.46.78,10.42.0.0",
              updateTime: 1682301810000,
            },
            {
              budgetVersionId: 1842182452449281,
              children: [
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963349,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "天棚",
                  new: false,
                  orderNo: 27,
                  parentId: 1849351790963382,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351792011942,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "踢脚",
                  new: false,
                  orderNo: 28,
                  parentId: 1849351790963382,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  count: 0,
                  createTime: 1682301810000,
                  createdHostIp: "10.1.46.78,10.42.0.0",
                  creator: "system",
                  creatorId: -1,
                  id: 1849351790963350,
                  lastOperator: "韦民扬",
                  lastOperatorId: 1658858666192897,
                  name: "楼地面",
                  new: false,
                  orderNo: 29,
                  parentId: 1849351790963382,
                  projectId: 1774308439969793,
                  reportType: 1,
                  status: 1,
                  type: 2,
                  updateHostIp: "10.1.46.78,10.42.0.0",
                  updateTime: 1682301810000,
                },
                {
                  budgetVersionId: 1842182452449281,
                  children: [
                    {
                      budgetVersionId: 1842182452449281,
                      count: 0,
                      createTime: 1682301810000,
                      createdHostIp: "10.1.46.78,10.42.0.0",
                      creator: "system",
                      creatorId: -1,
                      id: 1849351790963381,
                      lastOperator: "韦民扬",
                      lastOperatorId: 1658858666192897,
                      name: "楼地面",
                      new: false,
                      orderNo: 31,
                      parentId: 1849351792011910,
                      projectId: 1774308439969793,
                      reportType: 1,
                      status: 1,
                      thirdCommpent: "楼地面",
                      type: 3,
                      updateHostIp: "10.1.46.78,10.42.0.0",
                      updateTime: 1682301810000,
                    },
                    {
                      budgetVersionId: 1842182452449281,
                      count: 0,
                      createTime: 1682301810000,
                      createdHostIp: "10.1.46.78,10.42.0.0",
                      creator: "system",
                      creatorId: -1,
                      id: 1849351792011909,
                      lastOperator: "韦民扬",
                      lastOperatorId: 1658858666192897,
                      name: "踢脚",
                      new: false,
                      orderNo: 32,
                      parentId: 1849351792011910,
                      projectId: 1774308439969793,
                      reportType: 1,
                      status: 1,
                      thirdCommpent: "踢脚",
                      type: 3,
                      updateHostIp: "10.1.46.78,10.42.0.0",
                      updateTime: 1682301810000,
                    },
                    {
                      budgetVersionId: 1842182452449281,
                      count: 0,
                      createTime: 1682301810000,
                      createdHostIp: "10.1.46.78,10.42.0.0",
                      creator: "system",
                      creatorId: -1,
                      id: 1849351790963380,
                      lastOperator: "韦民扬",
                      lastOperatorId: 1658858666192897,
                      name: "墙裙",
                      new: false,
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          count: 0,
          id: -1,
          name: "构件分类",
          new: false,
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      ]
    };
  },
  mounted() {
    this.$nextTick(() => {
      this.$refs.componentTree.filter("VS");
    });
  },
  methods: {
    filterNode(val, data, node) {
      if (!val) return true;
      //叶子节点 并且 构件名称不包含‘VS’ 说明未匹配 则不显示
      if (node.isLeaf) {
        return node.label.indexOf(val) !== -1;
      } else {
        const children = data.children || [];
        if (children.length) {
          //子节点有 已匹配构件分类 则显示
          return children.some((el) => el.name.indexOf(val) !== -1);
        } else {
          return false;
        }
      }
    },
  },
};
</script>

2023/11/23补充解决过滤后el-tree全部展开问题

  mounted() {
    this.$nextTick(() => {
      this.$refs.componentTree.filter("VS");
      过滤后，调用此方法按条件设置展开收起
      this.expandOrCloseTree(this.$refs.componentTree,false)
    });
  },
        /**
     * 展开/收起树
     * @param ref
     * @param type true:展开；false:收起
     * @param level 展开的层级，默认第二级；level传99则展开全部
     */
      expandOrCloseTree(ref, type, level) {
        let allNodes = ref && ref.store._getAllNodes()
        allNodes = allNodes || []
        if (allNodes && allNodes.length > 0) {
            allNodes.forEach((item) => {
                if (type) {
                    if (level === 99) {
                        //展开全部
                        item.expanded = true
                    } else {
                        item.expanded = item.level < (level || 2)
                    }
                } else {
                    item.expanded = type
                }
            })
        }
    },
Debug-005-实现elementui的el-tree组件的一级节点的复选框不显示
LM0916的博客
05-09 1601
这里一共有两个问题：（1）如何生效（2）项目中还有别的组件和页面使用el-tree,这样修改之后，肯定会影响其他地方的使用，怎么处理？这里是通过改样式的方法，在网上参考别的大佬的代码，但其实我还没有深刻理解这段代码的含义，这里肯定要留意一下，再出一期。补充一下这一段知识点的空白，请各位大佬见谅。这里应该涉及到Vue中的深度选择器的相关知识（下面的代码是el-tree的基本结构和一些属性方法（请看备注，这里不再赘述，也可以去。这里我本来的思路其实是参考网上给出的另一种方式，即改源码的方式。
Debug-008-el-tree-叶子节点图标的显示
LM0916的博客
05-16 874
最近做了好几个有el-tree的页面，坑是真的多。不过对其中的方法和属性更熟悉了。光一个el-tree我写是篇博文估计都不够，方法属性贼多。今天实现了一个小功能，分享一下。主要是利用了CSS的显示隐藏，没什么讲的。至于el-tree的那些属性，我准备单独再来分享一次。本来以为要自己写的，结果人家已经封装好了，所以还是要对文档熟悉，el-tree叶子节点添加图标按钮。
element-ui树形控件隐藏某些指定的节点
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el-tree节点隐藏
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<think>嗯，用户问的是关于el-tree节点隐藏的问题。首先，我得回想一下Element UI中的el-tree组件，它常用于展示树形结构数据。用户可能在使用过程中遇到了需要隐藏某些节点的需求，比如根据条件动态隐藏，或者在特定情况下不显示某些节点。 首先，我需要确认el-tree是否直接支持节点隐藏的属性或方法。记得Element UI的文档中，el-tree的节点配置是通过data数组里的对象，每个节点可以设置各种属性。可能有一个属性叫`visible`或者`show`，但不确定。或者可能需要通过其他方式实现，比如CSS或者条件渲染。 如果直接属性不存在，可能需要用v-if或者v-show来控制节点的显示隐藏。不过el-tree的数据是响应式的，可能动态修改数据源来过滤节点会更有效。或者利用el-tree的过滤方法，比如使用`filter-node-method`属性，通过过滤函数来隐藏不符合条件的节点。 另外，用户可能希望隐藏节点但保留其数据，这样在后续操作中可能需要用到这些节点。这时候用CSS设置display:none可能更合适，或者通过过滤方法返回false来隐藏节点。需要确认filter-node-method的工作机制，是否只是隐藏节点而不是移除。 还可能要考虑性能问题，如果数据量很大，频繁过滤或修改数据源是否会导致渲染问题。这时候使用内置的过滤功能可能更高效，因为el-tree内部已经做了优化。 此外，用户可能需要动态切换节点的显示状态，比如点击按钮隐藏某些节点。这时候可能需要维护一个状态变量，控制过滤条件，然后调用el-tree的filter方法触发重新渲染。 总结一下，可能的解决方案有几种：使用filter-node-method方法过滤节点，在数据源中动态排除不需要的节点，或者用CSS隐藏。需要详细说明每种方法的步骤，并提供示例代码，方便用户理解。 还要考虑用户可能对Vue和Element UI的熟悉程度，所以解释时要尽量清晰，分步骤说明，并给出代码示例。比如，如何设置filter方法，如何绑定过滤条件，如何触发过滤动作等。 可能还需要提到，如果用户希望某些节点初始不可见，可以在数据初始化时设置相应的属性，或者在mounted生命周期中调用过滤方法。同时提醒用户，隐藏节点和删除节点的区别，确保他们不会因为隐藏而导致数据丢失。 最后，检查是否有其他相关属性或方法，比如lazy load是否影响节点隐藏，或者是否有关联的API如updateKey等需要特别注意的地方。确保给出的信息准确且全面，避免遗漏重要细节。</think>在 Element UI 的 `el-tree` 组件中，隐藏节点可以通过以下几种方式实现： --- ### **1. 数据驱动隐藏** 通过动态修改树形结构的 `data` 数据源，过滤掉需要隐藏的节点。这是最直接的方式，但会**真正移除节点数据**（非仅视觉隐藏）。 **示例代码：** ```javascript export default { data() { return { treeData: [ { label: '父节点', id: 1, children: [...] }, // ...其他节点 ] }; }, methods: { hideNode(nodeId) { this.treeData = this.treeData.filter(node => node.id !== nodeId); } } }; ``` --- ### **2. 使用 `filter-node-method` 过滤显示** 通过内置的过滤方法，实现节点的视觉隐藏（节点数据仍保留，仅不显示）。 **步骤：** 1. 设置 `filter-node-method` 属性，定义过滤函数。 2. 绑定一个过滤关键词 `filterText`，动态触发过滤。 **示例代码：** ```html <template> <el-tree :data="treeData" :filter-node-method="filterNode" :filter="filterText" /> </template> <script> export default { data() { return { filterText: '', treeData: [/* 树数据 */] }; }, methods: { filterNode(value, data) { if (!value) return true; // 返回 true 表示显示，false 表示隐藏 return data.label.includes(value); } } }; </script> ``` --- ### **3. 通过 CSS 控制样式** 直接隐藏节点元素（视觉隐藏，但节点仍存在）。 **示例代码：** ```css /* 隐藏所有 class 包含 'is-hidden' 的节点 */ .el-tree-node.is-hidden { display: none; } ``` 在节点数据中动态添加 `class`： ```javascript // 在节点数据中设置 className { label: '隐藏节点', className: 'is-hidden', // ... } ``` --- ### **4. 动态控制 `disabled` 属性** 虽然不是直接隐藏，但可以通过禁用节点 (`disabled: true`) 达到类似效果： ```javascript { label: '禁用节点', disabled: true, // ... } ``` --- ### **选择建议** - 若需**完全移除节点**，用 **数据驱动**。 - 若需**保留数据但视觉隐藏**，用 `filter-node-method`。 - 若需快速实现简单隐藏，用 **CSS**。 根据你的场景选择合适的方式即可！
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