微信小程序实现签到的日历功能

<view class="sign-wrapper">    <view class="calendar">      <view class="month">        <view class="item" wx:for="{{ week }}">            {{ item }}        </view>        <view class="item {{ item.type != 'curr' ? 'othe' : '' }}"         wx:for="{{ dateData }}">            {{ item.day }}        </view>      </view>    </view>  </view>

.calendar{   margin-top: 10%;}.month{      display: flex;      flex-flow: row wrap;      font-size: 1.1rem;  }.item{      width: 14.28%;      text-align: center;      line-height: 3rem;}.othe{   color: grey}

// pages/sing_in/sing_in.jsPage({  data: {    dateData: [],    isSignin: false,    week: ['日','一','二','三','四','五','六'],  },  onLoad: function (options) {      this.initCurrMonthData()  },  /**  * year string 年  如:2020   * month string 月 如: 5  * return array 所有天数 如:[1,2,3...,31]  **/  monthDays(year,month){      let days_count = new Date(year,month,0).getDate() //月总天数 如:31     let days = []; //存放月的天数     for(let i = 1; i <= days_count; i++)     days.push(i)     return days;  },  //初始化当月数据  initCurrMonthData(){     let currDate = new Date(); //当前日期     let currMonthDays =  this.monthDays(currDate.getFullYear(),currDate.getMonth() + 1) //当月 +1是因为月从0开始  只有0-11     let lastMonthDays = this.monthDays(currDate.getFullYear(),currDate.getMonth() ) //上个月     let currFirstWeek = new Date(currDate.getFullYear(),currDate.getMonth() - 1, 1).getDay() + 1;   //这个月的1号是星期几  -1是因从0开始      //月最后一天是星期几     let dateData = [];     dateData = currMonthDays.map(val => this.formatDay(val)) //当月的数据     for(let i = 0; i < currFirstWeek; i++)  //上月要显示的     dateData.unshift(        this.formatDay( lastMonthDays.pop(),'last')     );    let nextLenth = 42 - dateData.length;  // 42是因为 6 * 7格式    for(var i = 1; i <= nextLenth; i++) //下个月需要显示的日期    dateData.push(        this.formatDay( i, 'next')    );    this.setData({      dateData : dateData    })   },   formatDay(day,type = 'curr'){ //日期数据的格式化    return {day:day,type:type};   },   onShareAppMessage: function () {   }})