页面上显示出来的东西，布局上主要是一个年月栏、上一个月和下一个月的按钮；然后是星期栏，就是日一二三四五六，然后就是每个月的日期，注意每个月的前面可能有空的地方。这里面用wx:if标签来区分当前日期有无打卡的情况。
// pages/Calendar/Calendar.js//打卡日历页面var util = require('../../utils/util.js');var Bmob = require('../../utils/bmob.js');Page({ /** * 页面的初始数据 */ data: { objectId:'', days:[], signUp:[], cur_year:0, cur_month:0, count:0 }, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { this.setData({objectId : options.objectId}); //获取当前年月 const date = new Date(); const cur_year = date.getFullYear(); const cur_month = date.getMonth() + 1; const weeks_ch = ['日', '一', '二', '三', '四', '五', '六']; this.calculateEmptyGrids(cur_year, cur_month); this.calculateDays(cur_year, cur_month); //获取当前用户当前任务的签到状态 this.onGetSignUp(); this.setData({ cur_year, cur_month, weeks_ch }) }, /** * 生命周期函数--监听页面初次渲染完成 */ onReady: function () { }, /** * 生命周期函数--监听页面显示 */ onShow: function () { }, /** * 生命周期函数--监听页面隐藏 */ onHide: function () { }, /** * 生命周期函数--监听页面卸载 */ onUnload: function () { }, /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function () { }, /** * 页面上拉触底事件的处理函数 */ onReachBottom: function () { }, /** * 用户点击右上角分享 */ onShareAppMessage: function () { }, // 获取当月共多少天 getThisMonthDays:function(year, month){ return new Date(year, month, 0).getDate() }, // 获取当月第一天星期几 getFirstDayOfWeek:function(year, month) { return new Date(Date.UTC(year, month - 1, 1)).getDay(); }, // 计算当月1号前空了几个格子，把它填充在days数组的前面 calculateEmptyGrids:function(year, month) { var that = this; //计算每个月时要清零 that.setData({days:[]}); const firstDayOfWeek = this.getFirstDayOfWeek(year, month); if (firstDayOfWeek > 0) { for (let i = 0; i < firstDayOfWeek; i++) { var obj = { date:null, isSign:false } that.data.days.push(obj); } this.setData({ days:that.data.days }); //清空 } else { this.setData({ days: [] }); } }, // 绘制当月天数占的格子，并把它放到days数组中 calculateDays:function(year, month) { var that = this; const thisMonthDays = this.getThisMonthDays(year, month); for (let i = 1; i <= thisMonthDays; i++) { var obj = { date: i, isSign: false } that.data.days.push(obj); } this.setData({ days:that.data.days }); }, //匹配判断当月与当月哪些日子签到打卡 onJudgeSign:function(){ var that = this; var signs = that.data.signUp; var daysArr = that.data.days; for (var i=0; i < signs.length;i++){ var current = new Date(signs[i].date.replace(/-/g, "/")); var year = current.getFullYear(); var month = current.getMonth()+1; var day = current.getDate(); day = parseInt(day); for (var j = 0; j < daysArr.length;j++){ //年月日相同并且已打卡 if (year == that.data.cur_year && month == that.data.cur_month && daysArr[j].date == day && signs[i].isSign == "今日已打卡"){ daysArr[j].isSign = true; } } } that.setData({days:daysArr}); }, // 切换控制年月，上一个月，下一个月 handleCalendar:function(e) { const handle = e.currentTarget.dataset.handle; const cur_year = this.data.cur_year; const cur_month = this.data.cur_month; if (handle === 'prev') { let newMonth = cur_month - 1; let newYear = cur_year; if (newMonth < 1) { newYear = cur_year - 1; newMonth = 12; } this.calculateEmptyGrids(newYear, newMonth); this.calculateDays(newYear, newMonth); this.onGetSignUp(); this.setData({ cur_year: newYear, cur_month: newMonth }) } else { let newMonth = cur_month + 1; let newYear = cur_year; if (newMonth > 12) { newYear = cur_year + 1; newMonth = 1; } this.calculateEmptyGrids(newYear, newMonth); this.calculateDays(newYear, newMonth); this.onGetSignUp(); this.setData({ cur_year: newYear, cur_month: newMonth }) } }, //获取当前用户该任务的签到数组 onGetSignUp:function(){ var that = this; var Task_User = Bmob.Object.extend("task_user"); var q = new Bmob.Query(Task_User); q.get(that.data.objectId, { success: function (result) { that.setData({ signUp : result.get("signUp"), count : result.get("score") }); //获取后就判断签到情况 that.onJudgeSign(); }, error: function (object, error) { } }); }}) 
