cnpm i vue-calendar-component --save //国内镜像

import Calendar from "vue-calendar-component";
export default {
  components: { Calendar },
}

<template>
 <div class="x-f">
  <Calendar
   ref="Calendar"
   v-on:choseDay="clickDay"
   :style="{
    height: '4.4rem',
    width: '4rem',
    fontSize: '0.2rem !important',
   }"
  ></Calendar>
  <Calendar
   v-if="multiple"
   ref="Calendar2"
   v-on:choseDay="clickDay2"
   :style="{
    height: '4.4rem',
    width: '4rem',
    fontSize: '0.2rem !important',
   }"
  ></Calendar>
 </div>
</template>
<script>
import { formatDate } from "@/lib/date_fun.js";
import Calendar from "vue-calendar-component";
 
export default {
 components: { Calendar },
 props: {
  value: {
   //v-model双向绑定
   type: String,
   default: () => {
    return "";
   },
  },
  // 是否多选
  multiple: {
   type: Boolean,
   default: () => {
    return true;
   },
  },
  // 两个日期之间的间隔符
  separator: {
   type: String,
   default: () => {
    return "至";
   },
  },
 },
 data() {
  return {
   tap1: false, //日历组件1是否点击选中
   tap2: false, //日历组件2是否点击选中
   rqf: "",
   rqt: "",
  };
 },
 created() {
  //初始化设置日期选中
  this.$nextTick(() => {
   if (this.value.indexOf(this.separator) == -1) {
    this.$refs.Calendar.ChoseMonth(this.value);
   } else {
    this.$refs.Calendar.ChoseMonth(this.value.split(this.separator)[0]);
    this.$refs.Calendar2.ChoseMonth(this.value.split(this.separator)[1]);
   }
  });
 },
 watch: {
  value(date) {
   //监听整个日历组件值，设置选中状态
   this.$nextTick(() => {
    if (date.indexOf(this.separator) > -1) {
     this.$refs.Calendar.ChoseMonth(date.split(this.separator)[0]);
     this.$refs.Calendar2.ChoseMonth(date.split(this.separator)[1]);
    } else {
     this.$refs.Calendar.ChoseMonth(date);
    }
   });
  },
 },
 methods: {
  clickDay(date) {
   //日期1点击事件
   this.tap1 = true;
   this.rqf = formatDate(date);
   this.comit();
  },
  clickDay2(date) {
   //日期2点击事件
   this.tap2 = true;
   this.rqt = formatDate(date);
   this.comit();
  },
  comit() {
   //判断是否多选全部点击选中，或者单选点击选中
   if (this.tap1 && (this.tap2 || !this.multiple)) {
    let mrq = "";
    if (this.multiple) mrq = this.rqf + this.separator + this.rqt;
    //多选赋值格式
    else mrq = this.rqf; //单选赋值格式
    this.$emit("input", mrq); //给v-model赋值；
    //赋值结束，重设点击状态标识
    this.tap1 = false;
    this.tap2 = false;
   }
  },
 },
};
</script>

/* 日历组件 */
.wh_content_all{
  background-color: #ffffff !important;
}
 
.wh_top_changge li{
  color: rgb(50, 50, 51) !important;
  font-size: 0.18rem !important;
}
 
.wh_jiantou1{
  width: 0.1rem !important;
  height: 0.1rem !important;
  border-top: 2px solid rgb(50, 50, 51) !important;
  border-left: 2px solid rgb(50, 50, 51) !important;
}
 
.wh_jiantou2{
  width: 0.1rem !important;
  height: 0.1rem !important;
  border-top: 2px solid rgb(50, 50, 51) !important;
  border-right: 2px solid rgb(50, 50, 51) !important;
}
 
.wh_top_tag{ 
  font-size: 0.16rem !important;
}
 
.wh_item_date{
   font-size: 0.2rem !important;
}
 
.wh_content_item,
.wh_content_item_tag{
  width: 14.285% !important;
  color: rgb(50, 50, 51) !important;
}
 
.wh_content_item .wh_isToday{
  background: transparent !important;
}
 
.wh_content_item .wh_chose_day{
  background: #ee0a24 !important;
  color: #fff !important;
}
 
.wh_content{
  padding: 0 0.1rem !important;
}
 
.wh_container{
  position: relative;
}
 
.wh_container::after{
  content: '';
  width: 1px;
  height: 100%;
  position: absolute;
  right: 0;
  top: 0;
  background: #dddddd;;
}

<template>
  <div class="form-item mt20 x-f">
    <span class="form-label">日期</span>
    <van-popover v-model="showPopover" placement="bottom-end">
     <mCalendar v-model="rq" :multiple="multiple" :separator="separator"/>      
     <template #reference>
       <span class="form-input" @click="showPopover = !showPopover">{{ rq}}</span>
      </template>
     </van-popover>
   </div>
</template>
<script>
  import mCalendar from "@/components/mCalendar.vue";
  import { getNowDate } from '@/lib/date_fun.js'
  
  export default {
    components: { mCalendar },
    data () {
      return {
       showPopover:false,
       rq: getNowDate(),
       multiple: false, //日期是否多选
       separator: '至' //两个日期之间的间隔符
      }
    },
    watch:{
      //日期放生变化是隐藏日历Popover
      rq(){
       this.showPopover = false;
      }
    }
  }
</script>