固定时间timepicker

<template>
  <el-time-select
    placeholder="起始时间"
    v-model="startTime"
    :picker-options="{
      start: '08:30',
      step: '00:15',
      end: '18:30'
    }">
  </el-time-select>
  <el-time-select
    placeholder="结束时间"
    v-model="endTime"
    :picker-options="{
      start: '08:30',
      step: '00:15',
      end: '18:30',
      minTime: startTime
    }">
  </el-time-select>
</template>

<script>
  export default {
    data() {
      return {
        startTime: '',
        endTime: ''
      };
    }
  }
</script>