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這篇文章將為大家詳細講解有關微信小程序中怎么自定義一個可滑動的日歷界面,文章內容質量較高,因此小編分享給大家做個參考,希望大家閱讀完這篇文章后對相關知識有一定的了解。
WXML
<view class='container'> <view class='month flex m-around'> <view class='arrow' bindtap='prevMonth'>《 </view> <view class='year-and-month'> <picker mode="date" value="{{date}}" start="2015-09" end="2020-09" fields='month' bindchange="bindDateChange"> <view> {{date}} </view> </picker> </view> <view class='arrow' bindtap='nextMonth'> 》</view> </view> <view class='calendar flex column s-center'> <view class='week-row flex m-around'> <view class='grid' wx:for="{{week}}" wx:key='item'>{{item}}</view> </view> <swiper class='swpier-box' circular="true" current="{{swiperIndex}}" bindchange='swiperChange'> <swiper-item class='flex m-around days-table '> <view wx:for="{{calendar.first}}" wx:for-item='x' wx:key='x.date' class='grid {{x.month === month?"":"notCurrent"}} {{x.date === today?"today":""}} {{x.date == beSelectDate ? "choice":""}}' data-month='{{x.month}}' data-day='{{x.day}}' data-date='{{x.date}}' bindtap='bindDayTap'> <view>{{x.date === today?'今天':x.day}}</view> </view> </swiper-item> <swiper-item class='flex m-around days-table '> <view wx:for="{{calendar.second}}" wx:for-item='x' wx:key='x.date' class='grid {{x.month === month?"":"notCurrent"}} {{x.date === today?"today":""}} {{x.date == beSelectDate ? "choice":""}}' data-month='{{x.month}}' data-day='{{x.day}}' data-date='{{x.date}}' data-test='{{(year + "-" +month + "-" + day)}}' bindtap='bindDayTap'> <view>{{x.date === today?'今天':x.day}}</view> </view> </swiper-item> <swiper-item class='flex m-around days-table'> <view wx:for="{{calendar.third}}" wx:for-item='x' wx:key='x.date' class='grid {{x.month === month?"":"notCurrent"}} {{x.date === today?"today":""}} {{x.date == beSelectDate ? "choice":""}}' data-month='{{x.month}}' data-day='{{x.day}}' data-date='{{x.date}}' bindtap='bindDayTap'> <view>{{x.date === today?'今天':x.day}}</view> </view> </swiper-item> <swiper-item class='flex m-around days-table '> <view wx:for="{{calendar.fourth}}" wx:for-item='x' wx:key='x.date' class='grid {{x.month === month?"":"notCurrent"}} {{x.date === today?"today":""}} {{x.date == beSelectDate ? "choice":""}}' data-month='{{x.month}}' data-day='{{x.day}}' data-date='{{x.date}}' bindtap='bindDayTap'> <view>{{x.date === today?'今天':x.day}}</view> </view> </swiper-item> </swiper> </view> </view>
CSS
/* pages/calendar/calendar.wxss */ .container { height: 100vh; background-color: #393E44; } .days-table { flex-wrap: wrap; align-content: flex-start; } .calendar{ position: fixed; z-index:10000; background: #393E44; } .grid { width: 107.14rpx; height: 100rpx; text-align: center; line-height: 100rpx; font-size:.7rem; color:#fff; } .today { color: #88a1fd; } .grid view { height:85rpx; line-height: 85rpx; width:85rpx; } .choice view{ border-radius: 50%; background: #88a1fd; background-position:center; color: white; } /* 非本月日期 */ .notCurrent { color: silver; } .day-hover { background: red; } .swpier-box { height: 550rpx; width: 100%; } .arrow { width: 100rpx; color: #88a1fd; text-align: center; } .year-and-month{ color: #88a1fd; } .flex { display: flex; } /* 軸向 */ .column { flex-direction: column; } /* 主軸方向 */ .m-start { justify-content: flex-start; } .m-end { justify-content: flex-end; } .m-around { justify-content: space-around; } .m-between { justify-content: space-between; } .m-center { justify-content: center; } /* 側軸方向 */ .s-start { align-items: flex-start; } .s-end { align-items: flex-end; } .s-around { align-items: space-around; } .s-between { align-items: space-between; } .s-center { align-items: center; }
JS
// pages/calendar/calendar.js 'use strict'; let choose_year = null, choose_month = null; const conf = { data: { day: '', year: '', month: '', date: '2017-01', today: '', week: ['日', '一', '二', '三', '四', '五', '六'], calendar: { first: [], second: [], third: [], fourth: [] }, swiperMap: ['first', 'second', 'third', 'fourth'], swiperIndex: 1, showCaldenlar: false }, onLoad() { const date = new Date() , month = this.formatMonth(date.getMonth() + 1) , year = date.getFullYear() , day = this.formatDay(date.getDate()) , today = `${year}-${month}-${day}` let calendar = this.generateThreeMonths(year, month) this.setData({ calendar, month, year, day, today, beSelectDate: today, date: `${year}-${month}` }) }, showCaldenlar() { this.setData({ showCaldenlar: !this.data.showCaldenlar }) }, /** * * 左右滑動 * @param {any} e */ swiperChange(e) { const lastIndex = this.data.swiperIndex , currentIndex = e.detail.current let flag = false , { year, month, day, today, date, calendar, swiperMap } = this.data , change = swiperMap[(lastIndex + 2) % 4] , time = this.countMonth(year, month) , key = 'lastMonth' if (lastIndex > currentIndex) { lastIndex === 3 && currentIndex === 0 ? flag = true : null } else { lastIndex === 0 && currentIndex === 3 ? null : flag = true } if (flag) { key = 'nextMonth' } year = time[key].year month = time[key].month date = `${year}-${month}` day = '' if (today.indexOf(date) !== -1) { day = today.slice(-2) } time = this.countMonth(year, month) calendar[change] = null calendar[change] = this.generateAllDays(time[key].year, time[key].month) this.setData({ swiperIndex: currentIndex, //文檔上不推薦這么做,但是滑動并不會改變current的值,所以隨之而來的計算會出錯 year, month, date, day, calendar }) }, /** * * 點擊切換月份,生成本月視圖以及臨近兩個月的視圖 * @param {any} year * @param {any} month * @returns {object} calendar */ generateThreeMonths(year, month) { let { swiperIndex, swiperMap, calendar } = this.data , thisKey = swiperMap[swiperIndex] , lastKey = swiperMap[swiperIndex - 1 === -1 ? 3 : swiperIndex - 1] , nextKey = swiperMap[swiperIndex + 1 === 4 ? 0 : swiperIndex + 1] , time = this.countMonth(year, month) delete calendar[lastKey] calendar[lastKey] = this.generateAllDays(time.lastMonth.year, time.lastMonth.month) delete calendar[thisKey] calendar[thisKey] = this.generateAllDays(time.thisMonth.year, time.thisMonth.month) delete calendar[nextKey] calendar[nextKey] = this.generateAllDays(time.nextMonth.year, time.nextMonth.month) return calendar }, bindDayTap(e) { let { month, year } = this.data , time = this.countMonth(year, month) , tapMon = e.currentTarget.dataset.month , day = e.currentTarget.dataset.day if (tapMon == time.lastMonth.month) { this.changeDate(time.lastMonth.year, time.lastMonth.month) } else if (tapMon == time.nextMonth.month) { this.changeDate(time.nextMonth.year, time.nextMonth.month) } else { this.setData({ day }) } let beSelectDate = e.currentTarget.dataset.date; this.setData({ beSelectDate, showCaldenlar: false }) }, bindDateChange(e) { if (e.detail.value === this.data.date) { return } const month = e.detail.value.slice(-2) , year = e.detail.value.slice(0, 4) this.changeDate(year, month) }, prevMonth(e) { let { year, month } = this.data , time = this.countMonth(year, month) this.changeDate(time.lastMonth.year, time.lastMonth.month) }, nextMonth(e) { let { year, month } = this.data , time = this.countMonth(year, month) this.changeDate(time.nextMonth.year, time.nextMonth.month) }, /** * * 直接改變日期 * @param {any} year * @param {any} month */ changeDate(year, month) { let { day, today } = this.data , calendar = this.generateThreeMonths(year, month) , date = `${year}-${month}` date.indexOf(today) === -1 ? day = '01' : day = today.slice(-2) this.setData({ calendar, day, date, month, year, }) }, /** * * 月份處理 * @param {any} year * @param {any} month * @returns */ countMonth(year, month) { let lastMonth = { month: this.formatMonth(parseInt(month) - 1) } , thisMonth = { year, month, num: this.getNumOfDays(year, month) } , nextMonth = { month: this.formatMonth(parseInt(month) + 1) } lastMonth.year = parseInt(month) === 1 && parseInt(lastMonth.month) === 12 ? `${parseInt(year) - 1}` : year + '' lastMonth.num = this.getNumOfDays(lastMonth.year, lastMonth.month) nextMonth.year = parseInt(month) === 12 && parseInt(nextMonth.month) === 1 ? `${parseInt(year) + 1}` : year + '' nextMonth.num = this.getNumOfDays(nextMonth.year, nextMonth.month) return { lastMonth, thisMonth, nextMonth } }, currentMonthDays(year, month) { const numOfDays = this.getNumOfDays(year, month) return this.generateDays(year, month, numOfDays) }, /** * 生成上個月應顯示的天 * @param {any} year * @param {any} month * @returns */ lastMonthDays(year, month) { const lastMonth = this.formatMonth(parseInt(month) - 1) , lastMonthYear = parseInt(month) === 1 && parseInt(lastMonth) === 12 ? `${parseInt(year) - 1}` : year , lastNum = this.getNumOfDays(lastMonthYear, lastMonth) //上月天數 let startWeek = this.getWeekOfDate(year, month - 1, 1) //本月1號是周幾 , days = [] if (startWeek == 7) { return days } const startDay = lastNum - startWeek return this.generateDays(lastMonthYear, lastMonth, lastNum, { startNum: startDay, notCurrent: true }) }, /** * 生成下個月應顯示天 * @param {any} year * @param {any} month * @returns */ nextMonthDays(year, month) { const nextMonth = this.formatMonth(parseInt(month) + 1) , nextMonthYear = parseInt(month) === 12 && parseInt(nextMonth) === 1 ? `${parseInt(year) + 1}` : year , nextNum = this.getNumOfDays(nextMonthYear, nextMonth) //下月天數 let endWeek = this.getWeekOfDate(year, month) //本月最后一天是周幾 , days = [] , daysNum = 0 if (endWeek == 6) { return days } else if (endWeek == 7) { daysNum = 6 } else { daysNum = 6 - endWeek } return this.generateDays(nextMonthYear, nextMonth, daysNum, { startNum: 1, notCurrent: true }) }, /** * * 生成一個月的日歷 * @param {any} year * @param {any} month * @returns Array */ generateAllDays(year, month) { let lastMonth = this.lastMonthDays(year, month) , thisMonth = this.currentMonthDays(year, month) , nextMonth = this.nextMonthDays(year, month) , days = [].concat(lastMonth, thisMonth, nextMonth) return days }, /** * * 生成日詳情 * @param {any} year * @param {any} month * @param {any} daysNum * @param {boolean} [option={ * startNum:1, * grey: false * }] * @returns Array 日期對象數組 */ generateDays(year, month, daysNum, option = { startNum: 1, notCurrent: false }) { const weekMap = ['一', '二', '三', '四', '五', '六', '日'] let days = [] for (let i = option.startNum; i <= daysNum; i++) { let week = weekMap[new Date(year, month - 1, i).getUTCDay()] let day = this.formatDay(i) days.push({ date: `${year}-${month}-${day}`, event: false, day, week, month, year }) } return days }, /** * * 獲取指定月第n天是周幾 | * 9月第1天: 2017, 08, 1 | * 9月第31天:2017, 09, 0 * @param {any} year * @param {any} month * @param {number} [day=0] 0為最后一天,1為第一天 * @returns number 周 1-7, */ getWeekOfDate(year, month, day = 0) { let dateOfMonth = new Date(year, month, 0).getUTCDay() + 1; dateOfMonth == 7 ? dateOfMonth = 0 : ''; return dateOfMonth; }, /** * * 獲取本月天數 * @param {number} year * @param {number} month * @param {number} [day=0] 0為本月0最后一天的 * @returns number 1-31 */ getNumOfDays(year, month, day = 0) { return new Date(year, month, day).getDate() }, /** * * 月份處理 * @param {number} month * @returns format month MM 1-12 */ formatMonth(month) { let monthStr = '' if (month > 12 || month < 1) { monthStr = Math.abs(month - 12) + '' } else { monthStr = month + '' } monthStr = `${monthStr.length > 1 ? '' : '0'}${monthStr}` return monthStr }, formatDay(day) { return `${(day + '').length > 1 ? '' : '0'}${day}` } } Page(conf)
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