el-date-picker日期选择限制范围

// 这是<template>的  <el-row>             <el-col :span="12">               <el-form-item label="计划评审日期(起)" prop="planPsDateStart">                 <el-date-picker                   v-model="vm.edit.data.planPsDateStart"                   type="date"                   :picker-options="pickerOption_start"                   placeholder="开始时间"                   style="width: 100%"                 />               </el-form-item>             </el-col>             <el-col :span="12">               <el-form-item label="计划评审日期(止)" prop="planPsDateEnd">                 <el-date-picker                   v-model="vm.edit.data.planPsDateEnd"                   type="date"                   :picker-options="pickerOption_end"                   placeholder="结束时间"                   style="width: 100%"                 />               </el-form-item>             </el-col>            </el-row>    // 这是<script>下的data的   pickerOption_start: {         disabledDate: (time) => {           if (this.vm.edit.data.planPsDateEnd !== undefined) {             return time.getTime() > this.vm.edit.data.planPsDateEnd           }         }       },       pickerOption_end: {         disabledDate: (time) => {           if (this.vm.edit.data.planPsDateStart !== undefined) {             return time.getTime() < this.vm.edit.data.planPsDateStart           }         }       }

// 放在el-table下的两列<el-table-column prop="lastModifyUserId" label="计划开始日期" align="center">               <template slot-scope="scope">                 <el-date-picker                   v-model="scope.row.planStart"                   type="date"                   placeholder="计划开始日期"                   :picker-options="{disabledDate: (time) => {if (scope.row.planEnd !== undefined) {return time.getTime() > scope.row.planEnd} }}"                   style="width: 100%"                   :disabled="limitsDisabledFun()"                 />               </template>             </el-table-column>             <el-table-column prop="name" label="计划结束日期" align="center">               <template slot-scope="scope">                 <el-date-picker                   v-model="scope.row.planEnd"                   type="date"                   placeholder="计划结束日期"                   :picker-options="{disabledDate: (time) => {if (scope.row.planStart !== undefined) {return time.getTime() < scope.row.planStart} }}"                   style="width: 100%"                   :disabled="limitsDisabledFun()"                 />               </template>             </el-table-column>