小程序实现日历打卡功能

<view class="calendar">
  <view class='tit'>
    <view class='pre' bindtap='GotoPreMonth'>{{'《'}}</view>
    <view class='current'>{{currentYear}}年{{currentMonth}}月</view>
    <view class='next' bindtap='gotoNextMonth'>{{'》'}}</view>
  </view>
  <view class='w100P showData'>
    <view class="week" style='color: #999'>日</view>
    <view class="week">一</view>
    <view class="week">二</view>
    <view class="week">三</view>
    <view class="week">四</view>
    <view class="week">五</view>
    <view class="week" style='color: #999'>六</view>
  </view>
  <view class='content'>
    <view wx:for="{{allArr}}" wx:key="index" class='itemData' data-current="{{item.month == 'current' ? '1' : '0'}}"
      data-day='{{item.date}}' bindtap='clickDate'>
      <view class="{{item.month == 'current' ? '' : 'gray'}}"
        style="height:44px;width:44px;line-height:30px;{{nowYear==currentYear&&currentMonth==nowMonth&&item.date==nowDate?'color:#fff;background:#33D4C5;border-radius:100px':''}};{{item.month == 'current'&&selectedYear==currentYear&&selectedMonth==currentMonth&&item.date==selectedDate?'color:#fff;background:orange;border-radius:100px':''}} ">
        {{item.date}}
        <view>
          <icon wx:if="{{item.month == 'current'&&dataProcess.filterDate(currentPunchCardDate,item.date)}}" class="icon" color="#F44336" type="success_no_circle" size="15"></icon>
        </view>
      </view>
    </view>
  </view>
  <view class="btn-wrapper" bindtap="gotoToday">
    <button class="btn">回今天</button>
  </view>
  <!-- wxs页面内脚本，在渲染层做数据处理 -->
  <wxs module="dataProcess">
  function filterDate(currentPunchCardDate,date){
    if(currentPunchCardDate.indexOf(date)!==-1){
      return true
  }
  }
  module.exports={
    filterDate:filterDate
  }
  </wxs>
</view>

.calendar {
  width: 100%;
  background: #fff;
}
 
.pre,
.next {
  color: #33D4C5;
  text-align: center;
  line-height: 20px;
}
 
.calendar .tit {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40rpx 0;
 
}
 
.current {
  font-size: 32rpx;
  color: #2A2A2A;
}
 
.calendar .tit .current {
  margin: 0 60rpx;
}
 
.showData {
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
  padding-left: 25rpx;
  padding-right: 25rpx;
}
 
.showData .week {
  width: 14%;
  height: 70rpx;
  line-height: 70rpx;
  text-align: center;
  flex-shrink: 0;
  font-size: 30rpx;
  color: #2A2A2A;
}
 
.calendar .content {
  display: flex;
  flex-wrap: wrap;
  box-sizing: border-box;
  padding-left: 25rpx;
  padding-right: 25rpx;
}
 
.calendar .content .itemData {
  width: 14.2%;
  height: 90rpx;
  line-height: 90rpx;
  flex-shrink: 0;
  font-size: 30rpx;
  color: #2A2A2A;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
 
.calendar .content .icon {
  position: relative;
  top: -25rpx;
}
 
.calendar .content .gray {
  color: #999;
}
 
.currentSelected {
  color: #fff;
  background: #1CA2FC;
  border-radius: 100px;
}
 
.calendar .btn-wrapper {
  text-align: right;
  background-color: #fff;
  width: 100%;
  padding-bottom: 10rpx;
}
 
.calendar .btn-wrapper .btn {
  border: 1px solid #33D4C5;
  padding: 5rpx;
  width: 95rpx;
  font-size: 21rpx;
  color: #33D4C5;
  border-radius: 20rpx;
  margin-bottom: 15rpx;
  position: relative;
  left: calc(50% - 100rpx);
}

Component({
  
 
  properties: {
    currentPunchCardDate: {
      type: Array,
      value: []
    },
    currentYear: { // 当前页面显示的年
      type: Number,
      value: new Date().getFullYear()
    },
    currentMonth: { // 当前页面显示的年月
      type: Number,
      value: new Date().getMonth() + 1
    },
    nowYear: { // 当前年
      type: Number,
      value: new Date().getFullYear()
    },
    nowMonth: { // 当前月
      type: Number,
      value: new Date().getMonth() + 1
    },
    nowDate: { // 当前日
      type: Number,
      value: new Date().getDate()
    },
 
  },
 
  
  data: {
    currentMonthDateLen: 0, // 当月天数
    preMonthDateLen: 0, // 当月中，上月多余天数
    allArr: [], // 35个或42个日期数据=当前显示月所有日期数据+上月残余尾部日期+下月残余头部日期
    nowDate: null,
    selectedDate: null, //当前选择日期
    selectedMonth: null, //当前选择月
    selectedYear: null, //当前选择年
  },
  // 用observers监听properties的属性值
  observers: {
    'currentPunchCardDate': function (val) {
      console.log(val)
 
    }
  },
  // 在组件实例刚刚被创建时执行
  created() {},
  // 在组件实例进入页面节点树时执行
  ready() {
    this.getAllArr()
  },
  
  methods: {
    // 获取某年某月天数：下个月1日-本月1日 
    getDateLen(year, month) {
      let actualMonth = month - 1;
      let timeDistance = new Date(year, month) - new Date(year, actualMonth);
      return timeDistance / (1000 * 60 * 60 * 24);
    },
    // 获取某月1号是周几
    getFirstDateWeek(year, month) {
      // 0-6，0代表周天
      return new Date(year, month - 1, 1).getDay()
    },
    // 上月
    preMonth(year, month) {
      if (month == 1) {
        return {
          year: --year,
          month: 12
        }
      } else {
        return {
          year: year,
          month: --month
        }
      }
    },
    // 下月
    nextMonth(year, month) {
      if (month == 12) {
        return {
          year: ++year,
          month: 1
        }
      } else {
        return {
          year: year,
          month: ++month
        }
      }
    },
    // 获取当月数据，返回数组
    getCurrentArr() {
      let currentMonthDateLen = this.getDateLen(this.data.currentYear, this.data.currentMonth) // 获取当月天数
      let currentMonthDateArr = [] // 定义空数组
      if (currentMonthDateLen > 0) {
        for (let i = 1; i <= currentMonthDateLen; i++) {
          currentMonthDateArr.push({
            month: 'current', // 只是为了增加标识，区分上下月
            date: i
          })
        }
      }
      this.setData({
        currentMonthDateLen
      })
      return currentMonthDateArr
    },
    // 获取当月中，上月多余的日期数据，返回数组
    getPreArr() {
      let preMonthDateLen = this.getFirstDateWeek(this.data.currentYear, this.data.currentMonth) // 当月1号是周几 == 上月残余天数）
      console.log("preMonthDateLen=", preMonthDateLen);
      let preMonthDateArr = [] // 定义空数组
      if (preMonthDateLen > 0) {
        let {
          year,
          month
        } = this.preMonth(this.data.currentYear, this.data.currentMonth) // 获取上月 年、月
        let date = this.getDateLen(year, month) // 获取上月天数
        for (let i = 0; i < preMonthDateLen; i++) {
          preMonthDateArr.unshift({ // 尾部追加
            month: 'pre', // 只是为了增加标识，区分当、下月
            date: date
          })
          date--
        }
      }
      this.setData({
        preMonthDateLen
      })
      return preMonthDateArr
    },
    // 获取当月中，下月多余的日期数据，返回数组
    getNextArr() {
      let nextMonthDateLen = 35 - this.data.preMonthDateLen - this.data.currentMonthDateLen // 下月多余天数
      console.log(" nextMonthDateLen=", nextMonthDateLen);
      let nextMonthDateArr = [] // 定义空数组
      if (nextMonthDateLen > 0) {
        for (let i = 1; i <= nextMonthDateLen; i++) {
          nextMonthDateArr.push({
            month: 'next', // 只是为了增加标识，区分当、上月
            date: i
          })
        }
      } else if (nextMonthDateLen < 0) {
        for (let i = 1; i <= (7 + nextMonthDateLen); i++) {
          nextMonthDateArr.push({
            month: 'next', // 只是为了增加标识，区分当、上月
            date: i
          })
        }
 
      }
      return nextMonthDateArr
    },
    // 整合当月所有日期数据=上月残余+本月+下月多余
    getAllArr() {
      let preArr = this.getPreArr()
      let currentArr = this.getCurrentArr()
      let nextArr = this.getNextArr()
      let allArr = [...preArr, ...currentArr, ...nextArr]
      this.setData({
        allArr
      })
      let sendObj = {
        currentYear: this.data.currentYear,
        currentMonth: this.data.currentMonth,
        currentDate: this.data.selectedDate,
        allArr: this.data.allArr,
      }
      // 向父组件发送数据
      this.triggerEvent('sendObj', sendObj)
 
    },
    // 点击 上月
    gotoPreMonth() {
      let {
        year,
        month
      } = this.preMonth(this.data.currentYear, this.data.currentMonth)
      this.setData({
        currentYear: year,
        currentMonth: month,
      })
      this.getAllArr()
    },
    // 点击 下月
    gotoNextMonth() {
      let {
        year,
        month
      } = this.nextMonth(this.data.currentYear, this.data.currentMonth)
      this.setData({
        currentYear: year,
        currentMonth: month,
      })
      this.getAllArr()
    },
    // 点击日期
    clickDate(e) {
      var date = e.currentTarget.dataset.day;
      var current = e.currentTarget.dataset.current;
      if (current == 0) {
        if (date > 6) {
          // 点击上月日期--去上个月
          var {
            year,
            month
          } = this.preMonth(this.data.currentYear, this.data.currentMonth)
          this.gotoPreMonth()
        } else {
          // 点击下月
          var {
            year,
            month
          } = this.nextMonth(this.data.currentYear, this.data.currentMonth)
          this.gotoNextMonth()
        }
      } else {
        var year = this.data.currentYear;
        var month = this.data.currentMonth;
      }
      this.setData({
        selectedYear: year,
        selectedMonth: month,
        selectedDate: date,
      })
      console.log("当前选择日期", year, "-", month, "-", date);
      console.log(this.data.selectedDate);
      wx.nextTick(() => {
        this.getAllArr()
      })
 
    },
    // 回今天
    gotoToday() {
      this.setData({
        currentYear: this.data.nowYear,
        currentMonth: this.data.nowMonth,
      })
      this.getAllArr()
    }
  }
})

<view class="page-wrapper">
  <top-title toptitle="打卡日历" backImgFlag="true"></top-title>
  <calendar bind:sendObj="getObj" currentPunchCardDate="{{punchCardDateArr}}"></calendar>
  <view class="btn-wrapper">
    <button class="btn" type="primary" disabled="{{ disabledFlag}}" bindtap="punchCard">打 卡</button>
  </view>
  <view class="record-wrapper">
    <view class="title">
      <image class="img" src="{{icon}}"></image> {{name}}打卡统计
    </view>
    <view class="record">
      <view class="record-item">
        <view class="top"><text class="num">{{monthDays}}</text> 天</view>
        <view class="bottom">本月坚持天数</view>
      </view>
      <view class="record-item">
        <view class="top"><text class="num"> {{totalDays}}</text> 天</view>
        <view class="bottom">总共坚持天数</view>
      </view>
    </view>
  </view>
</view>

.page-wrapper {
  background-color: #fff;
  height: 100vh;
}
.page-wrapper .btn-wrapper .btn {
  width: 95vw;
  border-radius: 40rpx;
  height: 80rpx;
  font-size: 30rpx;
  background-color: #27d6f5;
  padding: 20rpx;
}
.page-wrapper .btn-wrapper .btn[disabled] {
  background-color: #e7e5e5;
}
.page-wrapper .record-wrapper {
  padding: 20rpx;
}
.page-wrapper .record-wrapper .title {
  color: #444;
  font-weight: bold;
}
.page-wrapper .record-wrapper .title .img {
  width: 60rpx;
  height: 60rpx;
  position: relative;
  top: 18rpx;
}
.page-wrapper .record-wrapper .record {
  display: flex;
  justify-content: space-around;
  margin-top: 20rpx;
}
.page-wrapper .record-wrapper .record .record-item {
  text-align: center;
  font-size: 24rpx;
  color: #a3a3a3;
}
.page-wrapper .record-wrapper .record .record-item .top {
  height: 80rpx;
  line-height: 80rpx;
  border-bottom: 1px solid #ececec;
  color: #333;
}
.page-wrapper .record-wrapper .record .record-item .top .num {
  font-size: 44rpx;
  font-weight: bold;
  color: #F44336;
}

// miniprogram/pages/punchCard/calendarCard/calendarCard.js
Page({
 
  
  data: {
    id: null,
    name: "",
    icon: "",
    disabledFlag: true,
    totalDays:0,
    monthDays:0,
    habitInfo: {},
    currentDate: null,
    currentMonth: null,
    currentYear: null,
    nowYear: new Date().getFullYear(),
    nowMonth: new Date().getMonth(),
    nowDate:new Date().getDate(),
    punchCardDateArr: [] //用于存放当月打卡日期-日
 
  },
  
  onLoad: function (options) {
    console.log(options);
    this.setData({
      id: options.id,
      name: options.name,
      icon: options.icon
    })
    var nowYear = new Date().getFullYear()
    var nowMonth = new Date().getMonth()
    wx.nextTick(() => {
      this.getHabitInfo(nowYear, nowMonth)
    })
  },
  // 获取子组件的数据
  getObj(e) {
    console.log("获取子组件的数据", e);
    this.setData({
      currentDate: e.detail.currentDate,
      currentMonth: e.detail.currentMonth,
      currentYear: e.detail.currentYear,
    })
    this.getHabitInfo(e.detail.currentYear, e.detail.currentMonth - 1)
  },
  // 获取当月的打卡数据
  getHabitInfo(year, month) {
    // 注意month范围 0-11，0代表1月
    const db = wx.cloud.database()
    db.collection('habitList').where({
      _id:this.data.id,
    }).get().then(res => {
      // console.log("从数据库获取数据[res]===", res);
      var dateTimeArr = res.data[0].dateTime
      var dateArr = []
      dateTimeArr.forEach((item) => {
        if (item.getFullYear() == year && item.getMonth() == month) {
          dateArr.push(item.getDate())
        }
      })
      console.log(year, month,this.data.currentDate);
      if (!this.data.currentDate ||(year==this.data.nowYear && month>this.data.nowMonth)||(year==this.data.nowYear && month==this.data.nowMonth &&this.data.currentDate>this.data.nowDate) ) {
        // 打卡按钮禁用的情况（1）页面初始化时，未点击任何日期（2）当前点击的日期在今天之后
        var flag = true
      } else {
        // 打卡按钮禁用的情况 （3）当前日期已打卡
        var flag = dateArr.indexOf(this.data.currentDate) == -1 ? false : true
      }
 
      this.setData({
        habitInfo: res.data[0],
        punchCardDateArr: dateArr,
        disabledFlag: flag,
        totalDays:dateTimeArr.length,
        monthDays:dateArr.length
      })
 
    }).catch(err => {
      console.log(err);
    })
  },
  // 点击打卡按钮-打卡
  punchCard() {
    console.log(this.data.currentYear, this.data.currentMonth - 1, this.data.currentDate);
    var currentTime = new Date(this.data.currentYear, this.data.currentMonth - 1, this.data.currentDate)
    const db = wx.cloud.database()
    db.collection('habitList').doc(this.data.id).update({
      data: {
       dateTime:db.command.push(currentTime)
      },
      success: res => {
        wx.showToast({
          title: '打卡成功',
        })
        this.getHabitInfo(this.data.currentYear, this.data.currentMonth - 1)
      },
      fail: err => {
        wx.showToast({
          icon: 'none',
          title: '新增记录失败'
        })
        console.error('[数据库] [新增记录] 失败：', err)
      }
    })
  }
})

{
  "usinGComponents": {
    "top-title":"../../../components/topTitle/topTitle",
    "calendar":"../components/calendar/calendar"
  }
}