場景：使用iview的日期選擇器DatePicker情況下還需要限制時分秒传睹，例如2020.01.14 09:39前的天時分不可選沧侥。

在此功能上我查看了iview官方文檔洒敏，并未有該類限制屬性矗蕊，但實際上通過源碼是有這個屬性的拿愧。

核心屬性options和timePickerOptions

核心實現(xiàn)：timePickerOptions下disabledHours和disabledMinutes顯示時分

<template>
  <div>
    <DatePicker
              type="datetime"
              :options="sendTimeLimit"
              :timePickerOptions="timePickerOptions"
              clearable
              @on-change="handleSendTime"
            />
  </div>
</template>
<script>
  export default {
    data () {
      return {
        sendTimeLimit:0,
        timePickerOptions: { steps: [1, 1, 60] },
      }
    },
    methods: {
       handleSendTime(val) {
         //重置時分秒的時間限制
       if()//判斷選中是否當(dāng)前當(dāng)天杠河，否則有之后天數(shù)的時分選擇都會有bug
      const hours = moment()
        .startOf('hour')
        .valueOf();
      const days = moment()
        .startOf('day')
        .valueOf();
      let hourNum = (hours - days) / 3600000;
      //這里獲取小時數(shù)可以用此類方法
      //const hourNum = Number(moment().format('H'))
      
      let hourArr = [];
      let hourMax = 0;
      for (let hour = 0; hour < hourNum; hour++) {
        hourArr.push(hour);
        hourMax = hour;
      }
      //此處循環(huán)出數(shù)組可以用這個方法let 
      //len = 15;
  //let arr = new Array(len).fill(0).map((e, i) => i);
  //console.log(arr);
      this.timePickerOptions.disabledHours = hourArr;
      this.handleSendTimeMin(val, hourMax);
    },

    handleSendTimeMin(val, hourMax) {
      let checkHour = new Date(val).getHours();
      if (checkHour <= hourMax + 1) {
        const hours = moment()
          .startOf('hour')
          .valueOf();
        const mins = moment()
          .startOf('minute')
          .valueOf();
        let minsNum = (mins - hours) / 60000;
        let minArr = [];
        for (let min = 0; min < minsNum; min++) {
          minArr.push(min);
        }
        this.timePickerOptions.disabledMinutes = minArr;
        this.timePickerOptions = JSON.parse(
          JSON.stringify(this.timePickerOptions)
        );
      } else {
        this.timePickerOptions.disabledMinutes = [];
      }
    },
    },
    mounted () {
      this.sendTimeLimit = {
        disabledDate(date) {
          const disabledDay = date.getTime();
          const start = moment()
            .startOf('day')
            .valueOf();
          return disabledDay < start;
        },
      };
    }
  }
</script>