Vue3+elementPlus中 树形控件封装的实现
时间:2025-07-22 09:03:09|栏目:JavaScript|点击: 次
1.组件
<template> <div class="selection"> <el-select placeholder="请选择" v-model="nameList" clearable @clear="handleClear" ref="selectUpResId" style="width: 100%"> <el-option hidden :key="1" :value="1"></el-option ><!--这个必不可少否则显示不出来下拉数据--> <!-- check-strictly :父子是否联动,根据业务修改 --> <el-tree :data="options" node-key="id" :props="defaultProps" :default-checked-keys="huixianarr" @check="handleNodeClick" show-checkbox ref="treeRef" :check-strictly="true" > </el-tree> </el-select> </div> </template> <script setup name="selects"> import { ref, reactive } from "vue"; //接受父组件传来的数据 const props = defineProps({ treeFilterData: { type: Array, default: () => [] //树形控件数据源 }, treeHxlist: { type: Array, default: () => [] //回显ID集合,根据业务修改 }, dfProps: { type: Object, default: () => {} //树形控件配置项,根据业务修改 } }); const treeRef = ref(); let nameList = ref(""); let huixianarr = ref([]); let idList = ref(); let options = ref([]); let defaultProps = ref({}); defaultProps.value = props.dfProps; let hxlist = ref([]); let treeForm = ref(); let list = ref(); var propertyName = props.dfProps.label; init(); function init() { options.value = props.treeFilterData; huixianarr.value = props.treeHxlist; let hxlist = findPathsByIds(options.value, huixianarr.value); nameList.value = hxlist.join(","); //显示内容 } const emit = defineEmits(["checKedId"]); function handleNodeClick(data, lst) { let arr = [], name = []; lst.checkedNodes.forEach(item => { //过滤拿到选中的id arr.push(item.id); }); lst.checkedNodes.forEach(item => { //过滤拿到选中的name name.push(item[propertyName]); }); nameList.value = name.join(","); //显示内容 idList.value = arr; //后台传参需要的id //传给父组件 emit("checKedId", idList.value); } function handleClear() { hxlist.value = []; idList.value = []; //id集合 nameList.value = ""; //input显示内容 huixianarr.value = []; //回显ID集合 treeRef.value.setCheckedKeys([]); //清空 } function findPathsByIds(data, targetIds) { const resultPaths = []; // 存储匹配的 title // 辅助函数:递归查找单个 id 的 title function findPathRecursive(items, targetId) { for (const item of items) { // 如果当前项的 id 匹配,添加其 title 到结果数组 if (item.id === targetId) { resultPaths.push(item[propertyName]); return; // 找到后直接返回 } // 如果有 children,递归查找 if (item.children && item.children.length > 0) { findPathRecursive(item.children, targetId); } } } // 遍历目标 id 数组,逐一查找 for (const id of targetIds) { findPathRecursive(data, id); } return resultPaths; } </script> <style scoped> .selection { width: 300px; } </style>
2.使用
<Selectoption :treeFilterData="treeFilterData" :treeHxlist="treeHxlist" :dfProps="dfProps" @checKedId="gettreelist" /> //回显 const treeFilterData = ref([1]); //格式 let dfProps = ref({ children: "children", label: "title" }); //数据 const treeFilterData = ref([ { "id": 1, "path": "/home/index", "name": "home", "component": "/home/index", "title": "首页", "meta": { "icon": "HomeFilled", "title": "首页", "isLink": "", "isHide": false, "isFull": false, "isAffix": true, "isKeepAlive": true } }, { "id": 6, "path": "/system", "name": "system", "redirect": "/system/accountManage", "title": "系统管理", "meta": { "icon": "Tools", "title": "系统管理", "isLink": "", "isHide": false, "isFull": false, "isAffix": false, "isKeepAlive": true }, "children": [ { "id": 61, "father": 6, "path": "/system/accountManage", "name": "accountManage", "component": "/system/accountManage/index", "title": "账号管理", "meta": { "icon": "Menu", "title": "账号管理", "isLink": "", "isHide": false, "isFull": false, "isAffix": false, "isKeepAlive": true } }, ] } ]);
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栏 目:JavaScript
本文标题:Vue3+elementPlus中 树形控件封装的实现
本文地址:https://www.fushidao.cc/wangluobiancheng/23735.html
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