一、效果展示：

• 展示可选层级

• 查看选中的值 

二、实现：

 

<el-form-item label="相关科室:" prop="orgId"><el-cascaderpopper-class="cascader-my":options="orgOptions":show-all-levels="false"v-model="orgList":props="props"@change="changeOrg"collapse-tagsplaceholder="请选择"filterable></el-cascader>
</el-form-item>//-------------相关变量定义-------------
rgOptions: [],
orgList: [], // 选中的科室数据
props: {children: 'childList',label: 'orgName',value: 'orgId',multiple: true,emitPath: false,expandTrigger: 'hover'}  //-------------相关方法--------------// 初始化科室initOrgInfo() {xxx().then((res) => {if (res.code === 200) {this.orgOptions = res.result} else {this.$message.error(res.message)}})},// 科室选中changeOrg(val) {if (val && val.length > 0) {const orgArr = this.findOrgIdInNestedList(val, this.orgOptions)this.form.orgId = orgArr.join() || ''}},// 科室无限层级迭代findOrgIdInNestedList(targetIds, orgOptions) {const deptData = []function searchOrg(options, targetId) {options.forEach((org) => {if (org.orgId === targetId) {deptData.push(org.orgId)} else if (org.childList && org.childList.length > 0) {searchOrg(org.childList, targetId)}})}targetIds.forEach((i) => {searchOrg(orgOptions, i)})return deptData},