element-ui 限制日期选择的方法(datepicker)

<script src="//unpkg.com/vue/dist/vue.js"></script><script src="//unpkg.com/element-ui@2.3.8/lib/index.js"></script><div id="app"><template> <div class="block">  <span class="demonstration">起始日期</span>  <el-date-picker v-model="startDate" type="date" placeholder="选择日期" :picker-options="pickerOptionsStart" @change="changeEnd">  </el-date-picker> </div>  <div class="block">  <span class="demonstration">截止日期</span>  <el-date-picker v-model="endDate" type="date" placeholder="选择日期" :picker-options="pickerOptionsEnd" @change="changeStart">  </el-date-picker> </div></template></div>

var Main = {  data() {   return {    pickerOptionsStart: {},    pickerOptionsEnd:{},    startDate: '',    endDate: '',   };  },  methods:{   changeStart (){    this.pickerOptionsStart = Object.assign({},this.pickerOptionsStart,{     disabledDate: (time) => {      return time.getTime() > this.endDate     }    })   },   changeEnd (){    this.pickerOptionsEnd = Object.assign({},this.pickerOptionsEnd,{     disabledDate: (time) => {      return time.getTime() < this.startDate      }    })   }  } };var Ctor = Vue.extend(Main)new Ctor().$mount('#app')

@import url("//unpkg.com/element-ui@2.3.8/lib/theme-chalk/index.css");.block{ margin-top:10px;}