"valueType": [ { "value": "value", "label": "直接赋值", "children": [] }, { "label": "时间转换", "children": [ { "value": "timestamp", "label": "13位时间戳" }, { "value": "timestamp", "label": "10位时间戳" }, { "value": "timestring1", "label": "yyyy-MM-dd'T'HH:mm:ss*SSSZZZZ" }, { "value": "timestring2", "label": "yyyy MMM dd HH:mm:ss.SSS zzz" }, { "value": "timestring3", "label": "MMM dd HH:mm:ss ZZZZ yyyy" }, { "value": "timestring4", "label": "dd/MMM/yyyy:HH:mm:ss ZZZZ" }, { "value": "timestring5", "label": "MMM dd, yyyy hh:mm:ss a" }, { "value": "timestring6", "label": "MMM dd yyyy HH:mm:ss" }, { "value": "timestring6", "label": "yyyymmddhhMMss" } ], "value": "time" }, { "label": "IP转换", "children": [ { "value": "ipstring", "label": "string" }, { "value": "iplong", "label": "long" } ], "value": "ip" }, { "value": "base64", "label": "Base64解码", "children": [] }, { "value": "hex", "label": "HEX解码", "children": [] }, { "value": "lowercase", "label": "小写转换", "children": [] }, { "value": "mac", "label": "MAC转换", "children": [] }, { "value": "dic", "label": "数据字典", "children": [] } ]javaScript点击children里的某一项怎么获取它的父节点是哪个

"valueType": [ { "value": "value", "label": "直接赋值", "children": [] }, { "label": "时间转换", "children": [ { "value": "timestamp", "label": "13位时间戳" }, { "value": "timestamp", "label": "10位时间戳" }, { "value": "timestring1", "label": "yyyy-MM-dd'T'HH:mm:ss*SSSZZZZ" }, { "value": "timestring2", "label": "yyyy MMM dd HH:mm:ss.SSS zzz" }, { "value": "timestring3", "label": "MMM dd HH:mm:ss ZZZZ yyyy" }, { "value": "timestring4", "label": "dd/MMM/yyyy:HH:mm:ss ZZZZ" }, { "value": "timestring5", "label": "MMM dd, yyyy hh:mm:ss a" }, { "value": "timestring6", "label": "MMM dd yyyy HH:mm:ss" }, { "value": "timestring6", "label": "yyyymmddhhMMss" } ], "value": "time" }, { "label": "IP转换", "children": [ { "value": "ipstring", "label": "string" }, { "value": "iplong", "label": "long" } ], "value": "ip" }, { "value": "base64", "label": "Base64解码", "children": [] }, { "value": "hex", "label": "HEX解码", "children": [] }, { "value": "lowercase", "label": "小写转换", "children": [] }, { "value": "mac", "label": "MAC转换", "children": [] }, { "value": "dic", "label": "数据字典", "children": [] } ]javaScript点击children里的某一项，怎么获取它的父节点是哪个，删除这个子节点，并更新整个valueType数组数据

您可以使用JavaScript来获取并删除子节点，并更新整个 valueType 数组的数据。以下是一个示例代码： javascript function deleteChildNodeAndRebuild(data, childValue) { for (let i = 0; i ; i++) { const...

"valueType": [ { "value": "value", "label": "直接赋值", "children": [] }, { "label": "时间转换", "children": [ { "value": "timestamp", "label": "13位时间戳" }, { "value": "timestamp", "label": "10位时间戳" }, { "value": "timestring1", "label": "yyyy-MM-dd'T'HH:mm:ss*SSSZZZZ" }, { "value": "timestring2", "label": "yyyy MMM dd HH:mm:ss.SSS zzz" }, { "value": "timestring3", "label": "MMM dd HH:mm:ss ZZZZ yyyy" }, { "value": "timestring4", "label": "dd/MMM/yyyy:HH:mm:ss ZZZZ" }, { "value": "timestring5", "label": "MMM dd, yyyy hh:mm:ss a" }, { "value": "timestring6", "label": "MMM dd yyyy HH:mm:ss" }, { "value": "timestring6", "label": "yyyymmddhhMMss" } ], "value": "time" }, { "label": "IP转换", "children": [ { "value": "ipstring", "label": "string" }, { "value": "iplong", "label": "long" } ], "value": "ip" }, { "value": "base64", "label": "Base64解码", "children": [] }, { "value": "hex", "label": "HEX解码", "children": [] }, { "value": "lowercase", "label": "小写转换", "children": [] }, { "value": "mac", "label": "MAC转换", "children": [] }, { "value": "dic", "label": "数据字典", "children": [] } ]点击children里的某一项怎么获取它的父节点是哪个

if child["value"] == child_value: return node["value"] return None child_value = "timestamp" parent_node = find_parent_node(data, child_value) print(parent_node) 在上面的示例中，data 是包含...

ElementUI el-tree多选功能深入分析：最佳实现方法

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中间代码生成详解：河南大学编译原理习题集实践

!... # 摘要中间代码生成是编译过程中的关键环节，它位于前端和后端之间，扮演着翻译前端输出和准备后端处理的角色。本文首先回顾了编译原理的基础知识，随后深入探讨中间代码生成的概念与重要性，分析了编译器的结构...

GetListTree({id:2,name:''}).then(res=>{ if(res.States>0){ res.Data.forEach(item=>{ Data.queryDoorplateList.push({ value: item.IsPart == 1 ? item.Id + ',' + item.IsPart : item.Id, label: item.Name, disabled: proxy.$commonUtil.childrenList(item.SubDepartment, 'disbleSelect') .length > 0 || item.Id === 10061 ? true : false, children: proxy.$commonUtil.childrenList(item.SubDepartment, 'disbleSelect'), }) }) Data.userDoorplateList = Data.queryDoorplateList } })const childrenList = (value, type) => { // 明确函数返回一个数组 return value.map(({ Id, IsPart, Name, IconFiles, ParentId, ParentName, SubDepartment, VenueAddr }) => { let node switch (type) { case 'select': node = { value: Id, label: Name, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; case 'class': node = { key: Id, title: Name, iconFiles: IconFiles, parentId: ParentId, parentName: ParentName, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; case 'moreSelect': node = { value: IsPart == 1 ? Id + ',' + IsPart : Id, venueAddr: VenueAddr ? VenueAddr : '', label: Name, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; case 'disbleSelect': node = { value: IsPart == 1 ? Id + ',' + IsPart : Id, label: Name, disabled: SubDepartment.length > 0 ? true : false, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; case 'disbleSelectAndToo': node = { value: IsPart == 1 ? Id + ',' + IsPart : Id, label: Name, venueAddr: VenueAddr ? VenueAddr : '', disabled: SubDepartment.length > 0 ? true : false, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; default: // 如果 type 不匹配任何已知值，返回空对象或抛出错误 return {}; } return node; }); };为什么会报warning.js:13 Warning: Same value exist in the tree: 10166 warning @ warning.js:13 processEntity @ useDataEntities.js:30 traverseDataNodes.externalGetKey @ treeUtil.js:307 processNode @ treeUtil.js:242 eval @ treeUtil.js:247 processNode这个错

- 原始数据 res.Data 中可能存在 Id 重复的节点，或 IsPart 字段的赋值逻辑导致 value 冲突。 --- ### 二、解决方案 #### 1. 确保 value 唯一性修改 value 的生成逻辑，确保全局唯一。例如： ...

解释一下这段代码treeDataPineVal(ThreeData, type) { const dataTemp = !_.isEmpty(ThreeData) ? [{ title: intl.get("common.全选"), value: "", children: [] }] : []; dataTemp.length && ThreeData.forEach((item, index) => { dataTemp[0].children.push({ title: item.desc ? (type ? item.code + " " + item.desc : item.desc) : item.domValDesc, value: item.code || item.domVal, pinyin: item.code || item.id, }); }); return dataTemp; } queryMultipleSelection(data, type) { let statusArr = []; if (this.props.historyData && this.props.historyData.form == "OrderBoard") { statusArr = this.props.historyData.queryContent.Reserve_Inventory_Status; } else { } const treeData = [...data]; const tProps = { treeData, value: this.state[type], defaultValue: this.state[type + "Availabled"] || [], onChange: "", maxTagCount: 1, treeCheckable: true, getPopupContainer: (triggerNode) => triggerNode.parentNode.parentNode, filterTreeNode: (inputValue, treeNode) => { if (treeNode && inputValue) { return treeNode.title.toLowerCase().indexOf(inputValue.toLowerCase()) >= 0; } return false; }, treeDefaultExpandAll: true, showCheckedStrategy: SHOW_PARENT, placeholder: intl.get("common.请选择"), size: "middle", className: "common-tree-select", }; // tProps.searchValue = ''; tProps.onChange = (value, label, extra) => { this.setState({ [type]: value }); }; return <TreeSelect {...tProps} />; }

treeDataPineVal方法接收两个参数ThreeData和type，它首先判断ThreeData是否为空，如果不为空，则创建一个数组dataTemp，数组中包含一个对象，对象有一个title属性和一个空的children数组。...

<template> <el-button type=“primary” @click=“showFormDialog()”>新增分类</el-button> <el-table:data="tableData" row-key="id":tree-props="{children: 'children'}" border default-expand-all style="width: 100%"> <el-table-column prop="id" label="ID" width="80" /> <el-table-column prop="name" label="分类名称" /> <el-table-column label="操作" width="180" align="center"> <template #default="{ row }"> <el-button type="primary" size="small" @click="showFormDialog(row.id)" >修改</el-button> <el-button type="danger" size="small" @click="handleDelete(row.id)" >删除</el-button> </template> </el-table-column> </el-table> <el-dialog v-model="formVisible" :title="currentId ? '修改分类' : '新增分类'" width="30%" > <el-form ref="formRef" :model="form" :rules="rules" label-width="80px" > <el-form-item label="分类名称" prop="name"> <el-input v-model="form.name" placeholder="请输入分类名称" /> </el-form-item> </el-form> <template #footer> <el-button @click="formVisible = false">取消</el-button> <el-button type="primary" @click="submitForm">确认</el-button> </template> </el-dialog> </template> <style scoped> .app-container { padding: 20px; } .mb-4 { margin-bottom: 16px; } </style> <script setup lang=“ts”> import { ref, onMounted } from ‘vue’ import type { FormInstance } from ‘element-plus’ import { ElMessage, ElMessageBox } from ‘element-plus’ import request from ‘@/utils/request’ // 请确保已配置请求实例 // 类型定义 interface CategoryEntity { id: number name: string pid: number children?: CategoryEntity[] } // 响应式数据 const tableData = ref<CategoryEntity[]>([]) const formVisible = ref(false) const currentId = ref<number | null>(null) const formRef = ref<FormInstance>() const form = ref({ name: ‘’, pid: 0 }) // 表单验证规则 const rules = { name: [ { required: true, message: ‘请输入分类名称’, trigger: ‘blur’ } ] } // 加载树形数据 const load = async () => { try { const res = await request.get(‘/category/tree’) if (res.data.code === “200”) { // 递归清理 children 为 null 的节点 const formatTreeData = (data) => { return data.map(item => ({ …item, children: item.children ? formatTreeData(item.children) : [] })) } // 在赋值前格式化数据 tableData.value = formatTreeData(res.data.data) console.log(‘处理后的数据：’, tableData.value) } else { ElMessage.error(‘数据加载失败’+res.data.msg) } } catch (error) { ElMessage.error(‘请求失败，请检查网络’) } } // 初始化加载 onMounted(() => { load() }) // 显示新增/修改对话框 const showFormDialog = (id: number | null = null) => { currentId.value = id if (id) { // 实际开发中这里需要调用接口获取详情数据 form.value = { name: ‘示例数据’, pid: 0 } // 模拟数据 } else { form.value = { name: ‘’, pid: 0 } } formVisible.value = true } // 提交表单 const submitForm = () => { formRef.value?.validate(async (valid) => { if (valid) { const url = currentId.value ? ‘/category/update’ : ‘/category/add’ try { const res = await request.post(url, { …form.value, id: currentId.value }) if (res.data.code === ‘200’) { ElMessage.success(currentId.value ? ‘修改成功’ : ‘新增成功’) formVisible.value = false load() } else { ElMessage.error( ‘操作失败’) } } catch (error) { ElMessage.error(‘请求失败’) } } }) } // 删除操作 const handleDelete = (id: number) => { ElMessageBox.confirm(‘确认要删除该分类吗？’, ‘警告’, { confirmButtonText: ‘确认’, cancelButtonText: ‘取消’, type: ‘warning’ }).then(async () => { const res = await request.post(‘/category/delete’, { id }) if (res.data.code === 200) { ElMessage.success(‘删除成功’) load() } else { ElMessage.error(‘删除失败’) } }).catch(() => null) } </script>为什么F12键检查发现{code: “200”, msg: “请求成功”,…}但是出现数据加载失败undefined,而且页面也没有展示数据.为什么,

children: item.children && Array.isArray(item.children) ? formatTreeData(item.children) : [] })) } 4. **调试建议** 在控制台添加调试信息： typescript console.log('原始数据：', res....

res.Data.forEach(item=>{ Data.queryDoorplateList.push({ value: item.IsPart == 1? i t e m . I d , item.Id,{item.IsPart}: i t e m . I d , item.Id,{item.DoorplateId}, label: item.Name, disabled: proxy.ParseError: KaTeX parse error: Expected 'EOF', got '}' at position 178: …ed 'EOF', got '}̲' at position 6…{DoorplateId}, label: Name, disabled: SubDepartment.length > 0 ? true : false, children: SubDepartment ? childrenList(SubDepartment, type) : [] // 检查 SubDepartment 是否存在，如果不存在则不进行递归调用 }; break; default: // 如果 type 不匹配任何已知值，返回空对象或抛出错误 return {}; } return node; }); };在Data.queryDoorplateLists树状型数据中怎么查找Id相等的一条数据

children: ... }); 因此，节点的唯一标识可能是value字段，而value字段可能来自item.Id或item.DoorplateId。因此，如果用户要查找的是item.Id等于目标Id的节点，则需要找到那些节点的value等于item.Id的情况，即当...

NLT: { name: '越达机器人', zjrl: 8833, sr: 100, sc: 200, shz: 11, shbl: 0, children: [ { name: 'NBQ#1逆变器', value: 8833,//输出 fdgl: 8833,//功率 zcdllsl: null,//组串电流离散率 zt_1: null,//状态 sr_1: 100,//输入 sc_1: 300,//输出 shz_1: 0,//损耗值 shbl_1: 2,//损耗比例 }, { name: 'NBQ#2逆变器', value: 8833,//输出 fdgl: 8833,//功率 zcdllsl: null,//组串电流离散率 zt_1: null,//状态 sr_1: 100,//输入 sc_1: 200,//输出 shz_1: 0,//损耗值 shbl_1: 0,//损耗比例 },] }, series: [ { type: 'tree', id: 0, data: [this.NLT], top: '10%', left: '8%', bottom: '22%', right: '20%', symbolSize: 7, edgeShape: 'polyline', edgeForkPosition: '63%', initialTreeDepth: 3, lineStyle: { width: 2 }, label: { position: 'left', verticalAlign: 'middle', align: 'right', formatter: function (params) { if (params.data.children) { return ${params.name}\n装机容量: ${data.zjrl}\n输入: ${data.sr}\n输出: ${data.sc}\n损耗值: ${data.shz}\n损耗比例: ${data.shbl}; // 一级菜单显示qesd } return ${params.name} 发电功率: ${params.data.fdgl || '--'} 组串电流离散率: ${params.data.zcdllsl ? params.data.zcdllsl + '%' : '--'} 状态: ${params.data.zt_1 ?? '--'} 输入: ${params.data.sr_1 || '--'} 输出: ${params.data.sc_1 || '--'} 损耗值: ${params.data.shz_1 || '--'} 损耗比例: ${params.data.shbl_1 || '--'}%; } }, leaves: { label: { position: 'right', verticalAlign: 'middle', align: 'left', // formatter: function (params) { // return ${params.name}\n发电功率: ${data.fdgl || '--'}\n组串电流离散率: ${data.zcdllsl}\n状态: ${data.zt_1}\n输入: ${data.sr_1}\n输出: ${data.sc_1}\n损耗值: ${data.shz_1}\n损耗值: ${data.shbl_1}; // } } }, emphasis: { focus: 'descendant' }, expandAndCollapse: true, animationDuration: 550, animationDurationUpdate: 750 } ]为什么 formatter: function (params) { if (params.data.children) { return ${params.name}\n装机容量: ${data.zjrl}\n输入: ${data.sr}\n输出: ${data.sc}\n损耗值: ${data.shz}\n损耗比例: ${data.shbl}; // 一级菜单显示qesd }识别不了没法获取到this.NLT里边的数

children: [ { name: 'NBQ#1逆变器', sr: 100, // 原sr_1 sc: 300, // 原sc_1 shz: 0, // 原shz_1 shbl: 2 // 原shbl_1 }, //...其他子节点 ] 第三步绑定数据源（确保数据注入） javascript // 在...

[ { "children": [], "id": "d72ba7de-6384-4b65-b71e-48dde5dd7fa5", "index": 0, "label": "Sum", "level": 0, "property": "first", "tid": "666d8f4d-6368-4b54-9d14-16a5713b04c4" }, { "children": [ { "children": [], "id": "b7dba771-bca3-4195-8f7e-08068a91cc75", "index": 0, "label": "AAA", "level": 0, "pid": "4964fff3-558c-4342-adf7-5023796215ba", "property": "A1" }, { "children": [], "id": "bc55394a-7872-4df1-ace5-f62ddbe24c5f", "index": 1, "label": "BBB", "level": 0, "pid": "4964fff3-558c-4342-adf7-5023796215ba", "property": "A2" } ], "id": "4964fff3-558c-4342-adf7-5023796215ba", "index": 1, "label": "DDD", "level": 0, "tid": "666d8f4d-6368-4b54-9d14-16a5713b04c4" } ] 将这个列表中含有property属性对象的放到对象item中，item = {first: 'Sum', 'A1':'DDD-AAA', 'A2':'DDD-BBB'} 使用的编程语言是javascript

{ name: 'Object1', property: 'DDD-AAA', children: [ // 嵌套数组 { id: 101, property: 'Nested-Value' } // 包含property的嵌套对象 ] }, { id: 2, property: 'DDD-BBB', other: 'ignore this' }, { name: ...

<template> <el-tree :data="treeData" :props="defaultProps" node-key="id" :highlight-current="true" :expand-on-click-node="false" > <template #default="{ node, data }"> {{ node.label }} (ID: {{ data.id }}) </template> </el-tree> </template> <script setup> import { ref, onMounted } from 'vue' import request from '@/utils/request' // 根据实际路径调整 import { ElTree } from 'element-plus' // 树形数据存储 const treeData = ref([]) // 树形组件配置 const defaultProps = ref({ children: 'children', label: 'title' }) // 加载树形数据 const loadTreeData = async () => { try { const res = await request.get('/category/tree') // 注意接口路径需要与后端一致 if (res.code === '200') { treeData.value = res.data } else { console.error('数据加载失败:', res.msg) } } catch (error) { console.error('请求异常:', error) } } // 组件挂载时加载数据 onMounted(() => { loadTreeData() }) </script> <style scoped> .category-container { padding: 20px; background: #fff; min-height: 500px; } .custom-node { font-size: 14px; } .el-tree { margin-top: 15px; } </style>以下面这种格式美化树状结构展示<template> <el-button type="primary" @click="showFormDialog()">新增分类</el-button> <el-table :data="tableData" row-key="id" :tree-props="{children: 'children'}" border default-expand-all style="width: 100%" > <el-table-column prop="id" label="ID" width="80" /> <el-table-column prop="title" label="分类名称" /> <el-table-column label="操作" width="180" align="center"> <template #default="{ row }"> <el-button type="primary" size="small" @click="showFormDialog(row.id)" >修改</el-button> <el-button type="danger" size="small" @click="handleDelete(row.id)" >删除</el-button> </template> </el-table-column> </el-table> <el-dialog v-model="formVisible" :title="currentId ? '修改分类' : '新增分类" width="30%" > <el-form ref="formRef" :model="form" :rules="rules" label-width="80px" > <el-form-item label="分类名称" prop="title"> <el-input v-model="form.title" placeholder="请输入分类名称" /> </el-form-item> </el-form> <template #footer> <el-button @click="formVisible = false">取消</el-button> <el-button type="primary" @click="submitForm">确认</el-button> </template> </el-dialog> </template> <style scoped> .app-container { padding: 20px; } .mb-4 { margin-bottom: 16px; } </style>

好的，用户希望将现有的树形结构展示从使用el-tree组件转换为el-table的树形表格形式，并添加操作功能。我需要先理解两段代码的结构和差异。首先，原代码使用的是el-tree，通过递归的节点展示数据，每个节点显示...

<template> <el-tree :data=“treeData” :props=“defaultProps” node-key=“id” :highlight-current=“true” :expand-on-click-node=“false” > <template #default=“{ node, data }”> {{ node.label }} (ID: {{ data.id }}) </template> </el-tree> </template> <script setup> import { ref, onMounted } from ‘vue’ import request from ‘@/utils/request’ // 根据实际路径调整 import { ElTree } from ‘element-plus’ // 树形数据存储 const treeData = ref([]) // 树形组件配置 const defaultProps = ref({ children: ‘children’, label: ‘title’ }) // 加载树形数据 const loadTreeData = async () => { try { const res = await request.get(‘/category/tree’) // 注意接口路径需要与后端一致 if (res.code === ‘200’) { treeData.value = res.data } else { console.error(‘数据加载失败:’, res.msg) } } catch (error) { console.error(‘请求异常:’, error) } } // 组件挂载时加载数据 onMounted(() => { loadTreeData() }) </script> <style scoped> .category-container { padding: 20px; background: #fff; min-height: 500px; } .custom-node { font-size: 14px; } .el-tree { margin-top: 15px; } </style>以下面这种格式美化树状结构展示,要求给出所有代码<template> <el-button type=“primary” @click=“showFormDialog()”>新增分类</el-button> <el-table :data="tableData" row-key="id" :tree-props="{children: 'children'}" border default-expand-all style="width: 100%" > <el-table-column prop="id" label="ID" width="80" /> <el-table-column prop="title" label="分类名称" /> <el-table-column label="操作" width="180" align="center"> <template #default="{ row }"> <el-button type="primary" size="small" @click="showFormDialog(row.id)" >修改</el-button> <el-button type="danger" size="small" @click="handleDelete(row.id)" >删除</el-button> </template> </el-table-column> </el-table> <el-dialog v-model="formVisible" :title="currentId ? '修改分类' : '新增分类" width="30%" > <el-form ref="formRef" :model="form" :rules="rules" label-width="80px" > <el-form-item label="分类名称" prop="title"> <el-input v-model="form.title" placeholder="请输入分类名称" /> </el-form-item> </el-form> <template #footer> <el-button @click="formVisible = false">取消</el-button> <el-button type="primary" @click="submitForm">确认</el-button> </template> </el-dialog> </template> <style scoped> .app-container { padding: 20px; } .mb-4 { margin-bottom: 16px; } </style>

不过，在用户的目标代码中，表格数据也是从接口获取的，可能数据结构相同，所以直接将treeData.value赋值给tableData.value即可，但需要确认字段是否匹配，尤其是children字段是否一致。另外，原来的代码使用了El...

已经知道树形结构数据展示的前端代码import { http } from “@/utils/http”; import { R, baseUrlApi } from “./utils”; export class UnitEntity { id: Number; unit: String; pid: Number; children: Array<UnitEntity>; } /** 获取全部的unit数据 */ export const getData = () => { return http.request<R<Array<UnitEntity>>>(“get”, baseUrlApi(“unit/list”)); };export const baseUrlApi = (url: string) => /api_demo/${url}; /** 后端返回通用数据类型 */ export type R<T> = { code: Number; msg: String; data: T; }; /** 同步休眠函数, 参数为毫秒 */ export const sleep = (ms: number): Promise<void> => { return new Promise(resolve => setTimeout(resolve, ms)); }; /** 分页数据类型 / export type PageUtils<T> = { /* 总记录数 / totalCount: number; /* 每页记录数 / pageSize: number; /* 总页数 / totalPage: number; /* 当前页数 / currPage: number; /* 列表数据 */ list: Array<T>; }; export const getStoreUser = () => { const res = sessionStorage.getItem(“user-info”); // const res = sessionStorage.getItem(“user-info”); console.log(res); return JSON.parse(res); }; <script setup lang=“ts”> import { ref, onMounted } from “vue”; import { UnitEntity, getData } from “@/api/tree.ts”; defineOptions({ name: “Welcome” }); const tableData = ref<Array<UnitEntity>>(); onMounted(() => { getData().then(res => { console.log(res); if (res.code === 0) { tableData.value = res.data; } }); }); </script> <template> <el-table :data=“tableData” style=“width: 100%; margin-bottom: 20px” row-key=“id” border default-expand-all <el-table-column prop="id" label="序号" sortable /> <el-table-column prop="unit" label="单位" sortable /> <el-table-column fixed="right" header-align="center" align="center" width="150" label="操作" > <template v-slot="scope"> <el-button type="text" size="small" @click="addOrUpdateHandle(scope.row.id)" >修改</el-button > </template> </el-table-column> </el-table> </template>如何改写为vue3的前端代码已经知道后端 CategoryController为 @GetMapping(“/tree”) public Result getCategoryTree() { List<Category> treeData = categoryService.getCategoryTree(); return Result.success(); }给出vue3的全部完整代码,实现前端树形结构数据展示

用户原来的代码中，tableData.value被赋值为res.data，但需要确认后端返回的数据结构是否匹配，可能需要处理数据转换，比如确保每个节点有children字段，即使为空数组。另外，el-table组件需要正确配置row-key和...

<Form.List name={item.key}> {(fields, { add, remove }) => ( <> {fields.map(({ key, name, ...restField }) => ( {item.children.map((child: any, idx: number) => ( <Form.Item key={idx} className={mr-2 ${["TextArea", "Object", "Select"].includes(child.type) ? "w-full" : "flex-1"}} {...restField} label={child.name} name={[name, child.key]} > {FormType(child)} </Form.Item> ))} <MinusCircleOutlined onClick={() => remove(name)} /> ))} <Form.Item className="text-center"> <Button type="dashed" onClick={() => add()} icon={}> 增加 </Button> </Form.Item> </> )} </Form.List> 解释一下add、和remove函数是哪里来的

- 通过解构赋值直接获取： jsx {(fields, { add, remove }) => (...)} 2. **add函数** - 作用：添加新的表单项组 - 触发方式：点击"增加"按钮时调用add() - 特性：自动生成新的字段标识，维护字段...

avue 动态新增表单赋值

children: [{ label: "", prop: "value" }] }] }; 当触发某个事件希望往现有集合里边再塞入一条记录的时候可以这样做： javascript function addItem() { const newItemId = item${formData.items....

我的代码运行失败，需求为探访方式下拉框选择第一个选项，而非特定文本，网页元素为：探访方式的网页元素为：<input type="search" id="VisitHeaderinfo-sp-49638_visit_method" autocomplete="off" class="ant-select-selection-search-input" role="combobox" aria-haspopup="listbox" aria-owns="VisitHeaderinfo-sp-49638_visit_method_list" aria-autocomplete="list" aria-controls="VisitHeaderinfo-sp-49638_visit_method_list" aria-activedescendant="VisitHeaderinfo-sp-49638_visit_method_list_1" aria-required="true" readonly="" unselectable="on" value="" aria-expanded="false" style="opacity: 0;">请选择探访方式<svg viewBox="64 64 896 896" focusable="false" data-icon="down" width="1em" height="1em" fill="currentColor" aria-hidden="true"></svg>

好的，我需要解决用户的问题：如何通过代码操作antd的下拉框组件（ant-select），默认选中第一个选项而不是特定文本。... 首先，我需要回忆一下ant-design的Select组件的工作...3. 通过form.setFieldsValue实现表单赋值

已经知道后端 CategoryController为 @GetMapping(“/tree”) public Result getCategoryTree() { List<Category> treeData = categoryService.getCategoryTree(); return Result.success(); }且已经知道前端代码的统一错误返回结果如下所示import axios from “axios”; import { ElMessage } from “element-plus”; const request=axios.create({ //跟有毛病似的,非要我从浏览器里面复制地址给你,手写的都不行,真是服了 baseURL:‘http://localhost:8080’, timeout:30000}) //request拦截器,可以自请求发送前对请求做一些处理 request.interceptors.request.use(config =>{ config.headers[‘Content-Type’]=‘application/json;charset=utf-8’; let user= JSON.parse(localStorage.getItem(‘xm-pro-user’)||‘{}’)//跟自己的文件名一致 config.headers[‘token’]=user.token return config },error=>{ return Promise.reject(error) }); request.interceptors.response.use( // 成功响应处理（保持原代码不变，仅插入新逻辑） response => { let res = response.data; if (typeof res === ‘string’) { res = res ? JSON.parse(res) : res } /* 插入新逻辑开始 / // 处理 403 业务状态码 if (res.code === ‘403’) { ElMessage.error(‘权限不足，拒绝访问’) // 可添加跳转逻辑 location.href = ‘/no-permission’ } / 插入新逻辑结束 / if (res.code === ‘401’) { ElMessage.error(res.msg) setTimeout(() => { location.href = ‘/login’ }, 500) } else { return res; // 保持原有返回逻辑不变 } }, // 错误响应处理（保持原代码不变，仅插入新逻辑） error => { / 插入新逻辑开始 / // 处理 403 HTTP 状态码 if (error.response?.status === 403) { ElMessage.error(‘身份认证过期，请重新登录’) setTimeout(() => { location.href = ‘/login’ }, 1500) } / 插入新逻辑结束 */ // 以下为完全保持原样的代码 if (error.response.status === 404) { ElMessage.error(‘未找到请求接口’) } else if (error.response.status === 500) { ElMessage.error(‘系统异常，请查看后端控制台报错’) } else { console.error(error.message) } return Promise.reject(error)}) export default request且已经知道前端代码的统一错误返回结果写法如下所示const add=()=>{ formRef.value.validate((valid)=>{ if(valid){//验证通过的话再新增 request.post(‘/category/add’,data.form).then(res=>{ if(res.code===‘200’){ data.formVisible=false ElMessage.success(‘新增成功’) load()//新增后重新加载最新的数据 }else{ ElMessage.error(res.msg) } }) } })数据库表结构为CREATE TABLE category ( id int(11) NOT NULL AUTO_INCREMENT COMMENT ‘课程分类id’, title varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT ‘课程分类标题’, parent_id int(11) DEFAULT NULL COMMENT ‘父ID’, sort int(10) unsigned DEFAULT ‘0’ COMMENT ‘排序字段’, PRIMARY KEY (id) ) ENGINE=MyISAM AUTO_INCREMENT=11 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT=‘课程分类’;给出vue3树形结构数据展示全部完整代码而且全部在Category.vue中,要求不报错且能顺利展示出数据

可能需要设置props属性，比如label: 'title'，children: 'children'，这样组件才能正确显示。最后，样式部分可能需要设置高度，或者添加一些基本的布局，比如容器div的class，让树形结构正常显示。测试的时候，...

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