• 基于vue手写仿钉钉 滑动日历


    template:

      

    <div id="calendar_content" class="calendar_content" @touchstart="handleStart" @touchmove="handleMove" @touchend="handleEnd">
      <div id="calendar_content_wrapper_prev" class="calendar_content_wrapper prev">
        <div class="week_wrap" v-for="(week, index) in prevDaysArr" :key="index">
          <div class="day_wrap" v-for="(day, indexDay) in week" :key="indexDay" :class="[6, 7].includes(day.week) ? 'rest_day' : ''">
            <div @click="changeActiveDay(day)">
              <p class="day_text" :class="activeDay === day.timeStr ? 'active_day' : ''">{{day.timeStr ? new Date(day.timeStr).getDate() : ''}}</p>
            </div>
            <template v-if="day.id">
              <span v-if="day.status == 0" class="normalCircle"></span>
              <span v-else class="abnormalCircle"></span>
            </template>
          </div>
        </div>
      </div>
      <div id="calendar_content_wrapper" class="calendar_content_wrapper middle">
        <div class="week_wrap" v-for="(week, index) in daysArr" :key="index">
          <div class="day_wrap" v-for="(day, indexDay) in week" :key="indexDay" :class="[6, 7].includes(day.week) ? 'rest_day' : ''">
            <div @click="changeActiveDay(day)">
              <p class="day_text" :class="activeDay === day.timeStr ? 'active_day' : ''">{{day.timeStr ? new Date(day.timeStr).getDate() : ''}}</p>
            </div>
            <template v-if="day.id">
              <span v-if="day.status == 0" class="normalCircle"></span>
              <span v-else class="abnormalCircle"></span>
            </template>
          </div>
        </div>
      </div>
      <div id="calendar_content_wrapper_next" class="calendar_content_wrapper next">
        <div class="week_wrap" v-for="(week, index) in nextDaysArr" :key="index">
          <div class="day_wrap" v-for="(day, indexDay) in week" :key="indexDay" :class="[6, 7].includes(day.week) ? 'rest_day' : ''">
            <div @click="changeActiveDay(day)">
              <p class="day_text" :class="activeDay === day.timeStr ? 'active_day' : ''">{{day.timeStr ? new Date(day.timeStr).getDate() : ''}}</p>
            </div>
            <template v-if="day.id">
              <span v-if="day.status == 0" class="normalCircle"></span>
              <span v-else class="abnormalCircle"></span>
            </template>
          </div>
        </div>
      </div>
    </div>

    data: 

                nowDay: '',
                nowWeekDay: '',
                prevDaysArr: [],
                daysArr: [],
                nextDaysArr: [],
                activeDay: '',
                activeDayInfo: {},// 坐标
                startClientX: '',
                isReset: false,

    methods: 

    // 组装查询月份的数组
    assembleDayArr (key, date) {
      let allDays = this.getMonthDay(date || this.nowDay);
      // 查询每周一的下标
      let indexArr = [];
      allDays.map((val, index) => {
        if(val.week === 1){
          indexArr.push(index);
        }
      });
      // 如果第一天正好是 周一 则剔除indexArr[0]
      if(indexArr[0] === 0){
        indexArr.splice(0, 1);
      };
      // 查询有几周
      let weeks = indexArr.length + 1;
      // 将 每周塞进数组
      let arr = [];
      for(let i = 0;i < weeks;i++){
        if(i === 0){
          arr[i] = allDays.slice(0, indexArr[0]);
        }else{
          arr[i] = allDays.slice(indexArr[i-1], indexArr[i]);
        }
        if(arr[i].length < 7 && arr[i][0].week === 1){
          let diff = 7 - arr[i].length;
          for(let j = 0;j < diff;j++){
            arr[i].push({});
          }
        }else if(arr[i].length < 7 && arr[i][0].week !== 1){
          let diff = 7 - arr[i].length;
          for(let j = 0;j < diff;j++){
            arr[i].unshift({});
          }
        }
      };
      this[key] = arr;
    },
    // 选中日期改变事件 changeActiveDay (day) {   if(day.timeStr && day.timeStr !== this.activeDayInfo.timeStr){     this.activeDay = day.timeStr;     this.activeDayInfo = {...day};     this.nowDay = day.timeStr;     this.nowWeekDay = this.findNowWeek();   } }, // 头部时间修改 changeMonth (flag, key) {   let resultMonth;   let nowChooseMonth = new Date(this.nowDay).getMonth();   if(flag === 'reduce'){     resultMonth = new Date(this.nowDay).setMonth(nowChooseMonth - 1, 1);   }else {     resultMonth = new Date(this.nowDay).setMonth(nowChooseMonth + 1, 1);     if(resultMonth > new Date().getTime()){       this.$toast.fail('不能选择未来月份');       return;     };   };   // 设置头部显示日期 查看是否是当前月份   if(dateFormat(new Date(), 'yyyy-MM') === dateFormat(new Date(resultMonth), 'yyyy-MM')){     this.nowDay = dateFormat(new Date(), 'yyyy-MM-dd');   }else{     this.nowDay = dateFormat(new Date(resultMonth), 'yyyy-MM-01');   };   this.activeDay = this.nowDay;   this.nowWeekDay = this.findNowWeek();   this.assembleDayArr(key || 'daysArr');   this.getList(); }, // 滑动开始 handleStart (e) {   this.startClientX = e.changedTouches[0].clientX; }, // 滑动中 handleMove (e) {   e.preventDefault();   // isReset 防止过多次 计算前后数组;   if(!this.isReset && Math.abs(e.changedTouches[0].clientX - this.startClientX) > 1){     let nowChooseMonth = new Date(this.nowDay).getMonth();     let prevMonth = new Date(this.nowDay).setMonth(nowChooseMonth - 1);     let nextMonth = new Date(this.nowDay).setMonth(nowChooseMonth + 1);     this.assembleDayArr('prevDaysArr', dateFormat(new Date(prevMonth), 'yyyy-MM-dd'));     this.assembleDayArr('nextDaysArr', dateFormat(new Date(nextMonth), 'yyyy-MM-dd'));     this.isReset = true;   }   let dom = document.getElementById('calendar_content');   dom.style.marginLeft = (e.changedTouches[0].clientX - this.startClientX) + 'px'; }, // 滑动结束 handleEnd (e) {   let diffX = e.changedTouches[0].clientX - this.startClientX;   let dom = document.getElementById('calendar_content');   if(Math.abs(diffX) === 0){     return;   }   if(Math.abs(diffX) > 100){     if(diffX < 0){       let nowChooseMonth = new Date(this.nowDay).getMonth();       let resultMonth = new Date(this.nowDay).setMonth(nowChooseMonth + 1);       if(resultMonth > new Date().getTime()){         goBack(dom, diffX);         this.$toast.fail('不能选择未来月份');         return;       };     }     let animation = document.getElementById("calendar_content").animate([       { marginLeft: `${diffX}px`},       { marginLeft: diffX > 0 ? '7.5rem' : '-7.5rem'}     ], {       duration: 500,       delay: 0     });     animation.play();     setTimeout(() => {       dom.style.marginLeft = 0;       if(diffX > 0){         this.changeMonth('reduce', 'daysArr');       };       if(diffX < 0){         this.changeMonth('plus', 'daysArr');       };       this.isReset = false;     }, 501);   }else{     goBack(dom, diffX);   };   // 回到远点 手指移动距离不超过100 以及 不能选择未来月份情况   function goBack (rDom, reference) {     let animation = document.getElementById("calendar_content").animate([       { marginLeft: `${reference}px`},       { marginLeft: 0}     ], {       duration: 500,       delay: 0     });     animation.play();     setTimeout(() => {       rDom.style.marginLeft = 0;     }, 501)   } },
    // 返回文字 星期几
    findNowWeek () {
      let nowWeek = new Date(this.nowDay).getDay();
      let weekInfo = {
        0: '星期日',
        1: '星期一',
        2: '星期二',
        3: '星期三',
        4: '星期四',
        5: '星期五',
        6: '星期六',
      };
      return weekInfo[nowWeek];
    },
    // 获取 月份 对应的所有日期
    getMonthDay (date) {
      let now = new Date(date);
      let current_month_num = this.mGetDate(date);
      let current_month = [];
      for (let i = 1; i <= current_month_num; i++) {
        let day = now.setDate(i);
        let everyDay = dateFormat(new Date(day), 'yyyy-MM-dd');
        current_month.push({
          timeStr: everyDay,
          week: new Date(everyDay).getDay() === 0 ? 7 :new Date(everyDay).getDay(),
          foreInfo: {},
          afterInfo: {},
        });
      };
      return current_month;
    },
    // 获取当前月的天数
    mGetDate (date) {
      var date = new Date(date);
      var year = date.getFullYear();
      var month = date.getMonth() + 1;
      var d = new Date(year, month, 0);
      return d.getDate();
    },

    css:

      

            .calendar_content{
                position: relative;
                width: 22.5rem;
                // top: .6rem;
                left: -7.5rem;
                display: flex;
                .calendar_content_wrapper{
                    flex: 1;
                    &.prev{
                        left: 0;
                    }
                    &.middle{
                        left: 7.5rem;
                    }
                    &.next{
                        right: 0;
                    }
                }
            }
            .week_wrap{
                display: flex;
                .day_wrap{
                    flex: 1;
                    &.rest_day{
                        color: #BABABA;
                    }
                    p{
                        margin: .1rem auto;
                        &.day_text{
                            width: .54rem;
                            height: .54rem;
                            line-height: .54rem;
                            border-radius: 100%;
                        }
                        &.active_day{
                            background: #3f6ad3;
                            color: white;
                        }
                    }
                }
            }
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  • 原文地址:https://www.cnblogs.com/Mr-Rshare/p/14621134.html
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