前言
在前端开发中，平时在填写表单中，可能会遇到需要展示选择树状数据的表单组件。但是在element中，并未提供能够处理树状数据选择的 select 选择框组件。所以就此，小温在开发中遇到类似的问题，封装了elementUi 的 select选择框组件。接下来给大家讲述一下！ 希望能给大家一些帮助！
提示：以下是本篇文章正文内容，下面案例仅供参考
👉 一、树状部门数据 下拉框单选
效果图如下：
实现代码：
> 组件代码 （ 父 ）
<el-form-item label="单位名称: ">
<SelectTree
style="width: 100%"
ref="selectTreeRef"
:props="defaultProps"
:options="treeData"
:value="valueId"
:clearable="true"
:accordion="true"
@getValue="getValue($event)"
/>
</el-form-item>
// 树状数据中，选定子元素名，展示名，选中值变量名
defaultProps: {
children: "list",
label: "orgName",
value: "orgId",
},
// 树状数据
treeData: [],
// 初始展开
valueId: '',
> 组件代码 （ 子 ）
此为 vue文件
<template>
<el-select v-model="valueTitle" placeholder="请选择" :clearable="clearable" @clear="clearHandle">
<el-option :value="valueTitle" :label="valueTitle" class="options">
<el-tree
id="tree-option"
ref="selectTree"
:accordion="accordion"
:data="options"
:props="props"
:node-key="props.value"
:default-expanded-keys="defaultExpandedKey"
@node-click="handleNodeClick">
</el-tree>
</el-option>
</el-select>
</template>
<script>
export default {
name: "el-tree-select",
props:{
// 配置项
props:{
type: Object,
default: () => {
return {
value:'id', // ID字段名
label: 'title', // 显示名称
children: 'children' // 子级字段名
};
}
},
// 选项列表数据(树形结构的对象数组)
options:{
type: Array, default: () => {
return [] } },
// 初始值
value:{
type: String, default: () => {
return null } },
// 可清空选项
clearable:{
type:Boolean, default: () => {
return true } },
// 自动收起
accordion:{
type:Boolean, default: () => {
return false } }
},
data() {
return {
valueId: null,
valueTitle:'',
defaultExpandedKey:[]
}
},
mounted(){
this.valueId = this.value, // 初始值
this.initHandle()
},
methods: {
// 初始化值
initHandle(){
if(this.valueId){
setTimeout(() => {
window.console.log(this.options)
this.valueTitle = this.$refs.selectTree.getNode(Number(this.valueId)).data[this.props.label] // 初始化显示
this.$refs.selectTree.setCurrentKey(Number(this.valueId)) // 设置默认选中
this.defaultExpandedKey = [this.valueId] // 设置默认展开
}, 500);
} else {
this.valueTitle = ""
}
this.initScroll()
},
// 初始化滚动条
initScroll(){
this.$nextTick(()=>{
let scrollWrap = document.querySelectorAll('.el-scrollbar .el-select-dropdown__wrap')[0]
let scrollBar = document.querySelectorAll('.el-scrollbar .el-scrollbar__bar')
scrollWrap.style.cssText = 'margin: 0px; max-height: none; overflow: hidden;'
scrollBar.forEach(ele => ele.style.width = 0)
})
},
// 切换选项
handleNodeClick(node, obj){
window.console.log(obj);
// if(obj.level <= 1 ) return false
this.valueTitle = node[this.props.label]
this.valueId = node[this.props.value]
this.$emit('getValue', [this.valueId,this.valueTitle])
this.defaultExpandedKey = []
},
// 清除选中
clearHandle(){
this.valueTitle = ''
this.valueId = null
this.defaultExpandedKey = []
this.clearSelected()
this.$emit('getValue', [this.valueId,this.valueTitle])
},
// 清空选中样式
clearSelected(){
let allNode = document.querySelectorAll('#tree-option .el-tree-node')
allNode.forEach((element)=>element.classList.remove('is-current'))
}
},
watch: {
value(){
this.valueId = this.value
this.initHandle()
}
},
}
</script>
<style scoped>
.el-scrollbar .el-scrollbar__view .el-select-dropdown__item{
height: auto;
max-height: 274px;
padding: 0;
overflow: hidden;
overflow-y: auto;
}
.el-select-dropdown__item.selected{
font-weight: normal;
}
ul li >>>.el-tree .el-tree-node__content{
height:auto;
padding: 0 20px;
}
.el-tree-node__label{
font-weight: normal;
}
.el-tree >>>.is-current .el-tree-node__label{
color: #409EFF;
font-weight: 700;
}
.el-tree >>>.is-current .el-tree-node__children .el-tree-node__label{
color:#606266;
font-weight: normal;
}
</style>
👉 二、树状部门数据 下拉框多选
效果图如下：
解释：多选和单选的代码差不多，就不做庸余的复制粘贴了。
- 需要注意的就是，在父组件中，初始值 valueId 为一个数组，因为可多选的原因，返回方法接受的值也为一个数组。
- 在赋值给 elementUi 的 select组件时，也需要将 所选内容进行处理。具体不同的，下面贴一下代码！
父组件
<SelectTree
style="width: 100%"
ref="selectTreeRef"
:props="defaultProps"
:options="treeData"
:value="valueId"
:clearable="isClearable"
:accordion="isAccordion"
@getValue="getValue($event)"
/>
<script>
data: {
defaultProps: {
children: "list",
label: "orgName",
value: "orgId",
},
valueId: [],
isClearable: true, // 可清空（可选）
isAccordion: true, // 可回收
treeData: [],
},
// 取值
getValue(v) {
if(Array.isArray(v) && v.length !== 0) {
this.formData.beCheckUnitIds = v.map(item => item[this.defaultProps.value]).join(',');
} else {
this.formData.beCheckUnitIds = "";
}
},
</script>
子组件
<template>
<el-select :value="valueTitle" :clearable="clearable" @clear="clearHandle">
<el-option :value="valueTitle" :label="valueTitle" class="options">
<el-tree
id="tree-option"
ref="selectTree"
:accordion="accordion"
:data="options"
:props="props"
:node-key="props.value"
:default-expanded-keys="defaultExpandedKey"
:filter-node-method="filterNode"
@node-click="handleNodeClick"
>
</el-tree>
</el-option>
</el-select>
</template>
<script>
export default {
name: "el-tree-select",
props: {
/* 配置项 */
props: {
type: Object,
default: () => {
return {
value: "id", // ID字段名
label: "title", // 显示名称
children: "children", // 子级字段名
};
},
},
/* 选项列表数据(树形结构的对象数组) */
options: {
type: Array,
default: () => {
return [];
},
},
/* 初始值 */
value: {
type: Array,
default: () => {
return [];
},
},
/* 可清空选项 */
clearable: {
type: Boolean,
default: () => {
return true;
},
},
/* 自动收起 */
accordion: {
type: Boolean,
default: () => {
return false;
},
},
},
data() {
return {
filterText: "",
valueId: '', // 初始值
valueTitle: "",
defaultExpandedKey: [],
selectData:[]
};
},
mounted() {
this.initHandle();
},
methods: {
// 初始化值
initHandle() {
// window.console.log(this.$refs.selectTree)
if (Array.isArray(this.value) && this.value.length !== 0) {
// window.console.log(this.$refs.selectTree.getNode(10036), '***')
this.value.forEach(item => {
this.valueTitle += `${
item[this.props.label]}，`
});
this.selectData = JSON.parse(JSON.stringify(this.value));
// this.$refs.selectTree.setCurrentKey(this.valueId); // 设置默认选中
this.defaultExpandedKey = [...(this.value.map(item => item[this.props.value]))]; // 设置默认展开
}
this.initScroll();
},
// 初始化滚动条
initScroll() {
this.$nextTick(() => {
let scrollWrap = document.querySelectorAll(
".el-scrollbar .el-select-dropdown__wrap"
)[0];
let scrollBar = document.querySelectorAll(
".el-scrollbar .el-scrollbar__bar"
);
scrollWrap.style.cssText =
"margin: 0px; max-height: none; overflow: hidden;";
scrollBar.forEach((ele) => (ele.style.width = 0));
});
},
// 切换选项
handleNodeClick(node) {
// window.console.log(node)
if (Array.isArray(node[this.props.children]) && node[this.props.children].length !== 0) {
return;
} else {
let val ='';
// window.console.log(node)
if (!this.selectData.some( item => {
return item[this.props.value] == node[this.props.value]
})) {
this.selectData.push(node)
this.selectData.forEach(el=> val += `${
el[this.props.label]}，`);
this.valueTitle = val;
this.valueId = node[this.props.value];
this.$emit("getValue", this.selectData);
this.defaultExpandedKey = [];
}
}
},
// 清除选中
clearHandle() {
this.valueTitle = "";
this.valueId = "";
this.defaultExpandedKey = [];
this.selectData = []
this.clearSelected();
this.$emit("getValue", null);
},
/* 清空选中样式 */
clearSelected() {
let allNode = document.querySelectorAll("#tree-option .el-tree-node");
allNode.forEach((element) => element.classList.remove("is-current"));
},
filterNode(value, data) {
if (!value) return true;
return data.name.indexOf(value) !== -1;
},
},
watch: {
value() {
// this.valueId = this.value;
this.initHandle();
},
filterText(val) {
this.$refs.selectTree.filter(val);
},
// options(val) {
// window.console.log(val)
// }
},
};
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.el-scrollbar .el-scrollbar__view .el-select-dropdown__item {
height: auto;
max-height: 274px;
padding: 0;
overflow: hidden;
overflow-y: auto;
}
.el-select-dropdown__item.selected {
font-weight: normal;
}
ul li >>> .el-tree .el-tree-node__content {
height: auto;
padding: 0 20px;
}
.el-tree-node__label {
font-weight: normal;
}
.el-tree >>> .is-current .el-tree-node__label {
color: #409eff;
font-weight: 700;
}
.el-tree >>> .is-current .el-tree-node__children .el-tree-node__label {
color: #606266;
font-weight: normal;
}
.selectInput {
padding: 0 5px;
box-sizing: border-box;
}
/* 开发禁用 */
/* .el-tree-node:focus>.el-tree-node__content{
background-color:transparent;
background-color: #f5f7fa;
color: #c0c4cc;
cursor: not-allowed;
}
.el-tree-node__content:hover{
background-color: #f5f7fa;
} */
</style>
👉 新增内容
> 单选 - 新增搜索栏及树状结构懒加载（2022.04.21）
💡 Tips: 本案例由于是之前写的，处在Vue2 向 Vue3 进步的学习阶段！ 框架为 Vue3 ，使用的是Vue2 的语法！ 有些许不一样，内容仅供参考！不得转载！
为了满足使用要求，在后端服务返回树状结构数据量多，且结构复杂时！ 使用搜索框进行关键词索引，以及树状结构数据懒加载！ 降低数据渲染压力，提高组件性能。
> 具体案例代码如下：
父组件
<treeSelete
ref="treeSelete"
:value="params.orgId"
:treeDate="orgTreeList"
placeholder="请选择机构名称"
@searchTreeList="remoteMethod($event)"
@changeVal="changeFormVal($event, 'params','orgId')"
/>
<script>
// 远程搜索机构
async remoteMethod(query) {
let {
data } = await this.$axios({
method: "get",
url: "/center/org/listOrgTree",
params: {
keyword: query,
t: new Date().getTime()
},
});
this.orgTreeList = this.changeTreeData(data.data);
}
</script>
子组件
<template>
<div class="box">
<!-- :key="selectValue" 如何想让el-select选中关闭，加入这个即可 -->
<el-select size="mini" :placeholder="placeholder" style="width: 240px;" clearable v-model="selectLabel" @clear="selectClear">
<el-option class="option-style" :label="selectLabel" :value="selectValue">
<el-input class="search" size="mini" placeholder="输入关键字进行过滤" v-model="keywork" @click.stop.native>
<template #append>
<el-button icon="el-icon-search" @click.stop.native="searchTree(keywork)"></el-button>
</template>
</el-input>
<el-tree
ref="tree"
v-loading="loading"
element-loading-text="加载中"
:data="treeDate"
:key="treeDate"
:props="treeProps"
:show-checkbox="showCheckbox"
:filter-node-method="filterNode"
@node-click="nodeClick"
@check-change="checkChange"
lazy
:load="loadTreeData">
<!-- :expand-on-click-node="false" 是否区分点击和展示图标事件 -->
<template v-slot="{ node, data }">
<i class="el-icon-folder-opened" style="margin-right: 5px;"></i>
<span :class="[{
'tree-click': treeClick==data.value}]">{
{data.label}}</span>
</template>
</el-tree>
</el-option>
</el-select>
</div>
</template>
<script>
import {
ElConfigProvider } from 'element-plus'
export default {
name: "test",
components: {
[ElConfigProvider.name]: ElConfigProvider},
data() {
return {
loading: false,
conciseTreeData: {
},
treeClick: null, //点击样式
keywork: null, //搜索关键字
selectLabel: null, //下拉框显示名称
selectValue: null, //下拉框显示ID
// treeDate: [{
// label: "主-测试0",
// value: 0,
// children: [{
// label: "子-测试0",
// value: 6
// }]
// },
// {
// label: "主-测试1",
// value: 1,
// children: [{
// label: "子-测试1",
// value: 7
// }]
// },
// {
// label: "主-测试2",
// value: 2,
// children: [{
// label: "子-测试2",
// value: 8
// }]
// },
// {
// label: "主-测试3",
// value: 3,
// children: [{
// label: "子-测试3",
// value: 9
// }]
// },
// {
// label: "主-测试4",
// value: 4,
// children: [{
// label: "子-测试4",
// value: 10
// }]
// },
// {
// label: "主-测试5",
// value: 5,
// children: [{
// label: "子-测试6",
// value: 11
// },
// {
// label: "子-测试7",
// value: 12
// }
// ]
// }
// ],
// treeProps: {
// children: "children",
// label: "label"
// }
}
},
props: {
treeDate: {
//树状数据
type: Array,
default: ()=>{
}
},
placeholder: {
//当前选中
type: String,
default: '请选择'
},
value: {
//当前选中
type: String,
default: ''
},
label: {
//当前选中的名称
type: String,
default: ''
},
treeProps: {
//树状规则
type: Object,
default: ()=> {
return {
children: "children",
label: "label"
};
}
},
showCheckbox: {
//是否可选择
type: Boolean,
default: false
}
},
methods: {
// 加载树状数据
async loadTreeData(node, resolve) {
// window.console.log(node, resolve)
if(node.level === 0 && this.keywork) {
return resolve(node.data);
}
let {
data } = await this.$axios({
method: "get",
url: "/center/org/listOrgTree",
params: {
// keyword: this.keywork,
type: 'org',
id: node.data.id,
isRootNode: false,
t: new Date().getTime()
},
});
// window.console.log(data)
resolve(data.data.length === 1 && data.data[0].entryId === node.data.id ? [] : this.TreeData(data.data));
},
// 格式化树状数据
TreeData(data) {
let dataArr = [];
data.forEach(res => {
dataArr.push({
id: res.entryId,
label: res.text,
value: res.entryId,
children: res.children && res.children.length !== 0 ? this.TreeData(res.children) : []
})
})
return dataArr;
},
selectClear() {
this.treeClick = null;
this.selectLabel = null;
this.selectValue = null;
},
filterNode(value, data) {
if (!value) {
return true;
}
return data.label.indexOf(value) !== -1;
},
nodeClick(obj, node) {
this.treeClick = obj.value;
this.selectLabel = obj.label;
this.selectValue = obj.value;
console.log(obj, node);
this.$forceUpdate();
},
checkChange(obj, node) {
console.log(obj, node);
},
// 扁平化树状数据， 后续查询label用
changeTreeData(data) {
data.forEach(item => {
this.conciseTreeData[item.value] = item.label;
if(item.children && item.children.length !== 0) {
this.changeTreeData(item.children);
}
})
},
// 搜索树状数据
searchTree(queryVal) {
this.loading = true;
this.$emit('searchTreeList', queryVal)
}
},
watch: {
treeDate(v) {
this.loading = false;
this.changeTreeData(v);
},
keywork(val) {
// this.$refs.tree.filter(val);
if(val == '' || val == null || val == undefined) {
this.loading = true;
this.$emit('searchTreeList', '')
}
},
selectValue(val) {
this.$emit('changeVal', val)
},
value(v) {
if(this.selectValue !== v) {
this.selectValue = v;
if(this.conciseTreeData[v]) {
this.selectLabel = this.conciseTreeData[v];
} else {
this.selectLabel = this.label;
}
this.treeClick = v;
}
}
},
computed: {
},
created() {
this.changeTreeData(this.treeDate);
},
mounted() {
},
beforeDestroy() {
}
}
</script>
<style scoped>
.box {
/* width: 100%; */
/* height: 100%; */
/* margin: 1rem; */
}
.search {
width: calc(100% - 8px - 0.5rem);
margin: 0 0.5rem;
}
.option-style {
padding: 0;
width: 100%;
height: 100%;
background-color: #FFFFFF;
}
.tree-click {
color: #4D74D6;
font-weight: 600;
}
/deep/ .el-tree-node__content {
padding: 0.25rem;
}
/deep/ .el-icon-caret-right {
font-size: 0;
}
</style>
> 效果图
> 多选 - 新增二次点击已选内容，则删除该选项的选中状态，且增加已选内容分区（2022.07.15）
💡 Tips: 本案例由于是之前写的，处在Vue2 向 Vue3 进步的学习阶段！ 框架为 Vue3 ，使用的是Vue2 的语法！ 有些许不一样，内容仅供参考！不得转载！
为了满足使用要求，在使用时，难免会出现多选选错内容的情况，而且因为输入框选择内容过多时，会出现无法看见选中的内容。所以实现了标题所述效果。
> 具体案例代码如下：
父组件
<SelectTree
style="width: 100%"
ref="selectTreeRef"
:props="defaultProps"
:options="treeData"
:value="valueId"
:clearable="isClearable"
:accordion="isAccordion"
@getValue="getValue($event)"
/>
<script>
data: {
defaultProps: {
children: "list",
label: "orgName",
value: "orgId",
},
valueId: [],
isClearable: true, // 可清空（可选）
isAccordion: true, // 可回收
treeData: [],
},
// 取值
getValue(v) {
if(Array.isArray(v) && v.length !== 0) {
this.formData.beCheckUnitIds = v.map(item => item[this.defaultProps.value]).join(',');
} else {
this.formData.beCheckUnitIds = "";
}
},
</script>
子组件
<template>
<el-select :value="valueTitle" :clearable="clearable" @clear="clearHandle">
<el-option-group label="已选内容">
<el-option value="" label="" class="options">
<el-tree
id="tree-option"
ref="selectTree"
:accordion="accordion"
:data="selectData"
:props="props"
:node-key="props.value"
:default-expanded-keys="defaultExpandedKey"
:filter-node-method="filterNode"
@node-click="handleNodeClick"
>
</el-tree>
</el-option>
</el-option-group>
<el-option-group label="选项">
<el-option :value="valueTitle" :label="valueTitle" class="options">
<el-tree
id="tree-option"
ref="selectTree"
:accordion="accordion"
:data="options"
:props="props"
:node-key="props.value"
:default-expanded-keys="defaultExpandedKey"
:filter-node-method="filterNode"
@node-click="handleNodeClick"
>
</el-tree>
</el-option>
</el-option-group>
</el-select>
</template>
<script>
export default {
name: "el-tree-select",
props: {
/* 配置项 */
props: {
type: Object,
default: () => {
return {
value: "id", // ID字段名
label: "title", // 显示名称
children: "children", // 子级字段名
};
},
},
/* 选项列表数据(树形结构的对象数组) */
options: {
type: Array,
default: () => {
return [];
},
},
/* 初始值 */
value: {
type: Array,
default: () => {
return [];
},
},
/* 可清空选项 */
clearable: {
type: Boolean,
default: () => {
return true;
},
},
/* 自动收起 */
accordion: {
type: Boolean,
default: () => {
return false;
},
},
},
data() {
return {
filterText: "",
valueId: '', // 初始值
valueTitle: "",
defaultExpandedKey: [],
selectData:[]
};
},
mounted() {
this.initHandle();
},
methods: {
// 初始化值
initHandle() {
// window.console.log(this.$refs.selectTree)
if (Array.isArray(this.value) && this.value.length !== 0) {
// window.console.log(this.$refs.selectTree.getNode(10036), '***')
this.value.forEach(item => {
this.valueTitle += `${
item[this.props.label]}，`
});
this.selectData = JSON.parse(JSON.stringify(this.value));
// this.$refs.selectTree.setCurrentKey(this.valueId); // 设置默认选中
this.defaultExpandedKey = [...(this.value.map(item => item[this.props.value]))]; // 设置默认展开
}
this.initScroll();
},
// 初始化滚动条
initScroll() {
this.$nextTick(() => {
let scrollWrap = document.querySelectorAll(
".el-scrollbar .el-select-dropdown__wrap"
)[0];
let scrollBar = document.querySelectorAll(
".el-scrollbar .el-scrollbar__bar"
);
scrollWrap.style.cssText =
"margin: 0px; max-height: none; overflow: hidden;";
scrollBar.forEach((ele) => (ele.style.width = 0));
});
},
// 切换选项
handleNodeClick(node) {
// window.console.log(node)
if (Array.isArray(node[this.props.children]) && node[this.props.children].length !== 0) {
return;
} else {
let val ='';
// window.console.log(node)
if (!this.selectData.some( item => {
return item[this.props.value] == node[this.props.value]
})) {
this.selectData.push(node)
this.selectData.forEach(el=> val += `${
el[this.props.label]}，`);
this.valueTitle = val;
this.valueId = node[this.props.value];
this.$emit("getValue", this.selectData);
this.defaultExpandedKey = [];
} else {
// window.console.log(node, this.selectData, '再次点击已选内容，则删除');
this.selectData = this.selectData.filter(item => {
return node[this.props.value] !== item[this.props.value]
});
this.selectData.forEach(el=> val += `${
el[this.props.label]}，`);
this.valueTitle = val;
this.valueId = '';
this.clearSelected();
this.$emit("getValue", this.selectData);
this.defaultExpandedKey = [];
}
}
},
// 清除选中
clearHandle() {
this.valueTitle = "";
this.valueId = "";
this.defaultExpandedKey = [];
this.selectData = []
this.clearSelected();
this.$emit("getValue", null);
},
/* 清空选中样式 */
clearSelected() {
let allNode = document.querySelectorAll("#tree-option .el-tree-node");
allNode.forEach((element) => element.classList.remove("is-current"));
},
filterNode(value, data) {
if (!value) return true;
return data.name.indexOf(value) !== -1;
},
},
watch: {
value() {
// this.valueId = this.value;
this.initHandle();
},
filterText(val) {
this.$refs.selectTree.filter(val);
},
// options(val) {
// window.console.log(val)
// }
},
};
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.el-scrollbar .el-scrollbar__view .el-select-dropdown__item {
height: auto;
max-height: 274px;
padding: 0;
overflow: hidden;
overflow-y: auto;
}
.el-select-dropdown__item.selected {
font-weight: normal;
}
ul li >>> .el-tree .el-tree-node__content {
height: auto;
padding: 0 20px;
}
.el-tree-node__label {
font-weight: normal;
}
.el-tree >>> .is-current .el-tree-node__label {
color: #409eff;
font-weight: 700;
}
.el-tree >>> .is-current .el-tree-node__children .el-tree-node__label {
color: #606266;
font-weight: normal;
}
.selectInput {
padding: 0 5px;
box-sizing: border-box;
}
/* 开发禁用 */
/* .el-tree-node:focus>.el-tree-node__content{
background-color:transparent;
background-color: #f5f7fa;
color: #c0c4cc;
cursor: not-allowed;
}
.el-tree-node__content:hover{
background-color: #f5f7fa;
} */
</style>
> 效果图
> 多选， 新增是否限制可选等级
HTML改动
<!-- 父级 -->
<SelectTree
style="width: 100%"
ref="selectTreeRef"
:props="defaultProps"
:options="treeData"
:value="valueId"
:clearable="isClearable"
:accordion="isAccordion"
:isUseLevel="true"
:level="2"
@getValue="getValue($event)"
/>
<!-- 子级 -->
<el-option-group label="已选内容">
<el-option value="" label="" class="options">
<el-tree
id="tree-option"
ref="selectTree"
:accordion="accordion"
:data="selectData"
:props="props"
:node-key="props.value"
:default-expanded-keys="defaultExpandedKey"
:filter-node-method="filterNode"
@node-click="handleNodeClick_delete"
></el-tree>
</el-option>
</el-option-group>
传入参数
/* 是否使用树状等级限制，默认不启用 */
isUseLevel: {
type: Boolean,
default: () => {
return false;
},
},
// 限制等级
level: {
type: Number,
default: () => {
return 0;
},
},
// 删除已选选项
handleNodeClick_delete(node) {
let val ='';
this.selectData = this.selectData.filter(item => {
return node[this.props.value] !== item[this.props.value]
});
this.selectData.forEach(el=> val += `${
el[this.props.label]}，`);
this.valueTitle = val;
this.valueId = '';
this.clearSelected();
this.$emit("getValue", this.selectData);
this.defaultExpandedKey = [];
},
handleNodeClick(node, obj) {
if (
this.isUseLevel
? (obj.level < this.level)
: (Array.isArray(node[this.props.children]) && node[this.props.children].length !== 0)
) {
return false;
} else {
...未改动
}
},
往期内容 💨
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总结
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