组件化开发是一种将大型软件系统分解为更小、更易于管理和复用的独立模块或组件的方法。这种方法在现代软件开发中越来越受到重视，尤其是在前端开发领域。微信小程序的日期区间选择组件的使用

wxml 代码

<view><view bind:tap="chooseData">{{ rendunTime || '请选择开始时间和结束时间'}}</view><sx-data-picker show="{{isShowData}}" bind:confirm="getDataSlot"></sx-data-picker>
</view>

js 代码

Page({data: {isShowData:false,rendunTime:""},chooseData(){this.setData({isShowData:!this.isShowData})},getDataSlot(e){let time = `${e.detail.start} 至 ${e.detail.end}`this.setData({rendunTime:time})}
})

微信小程序的日期区间选择组件的封装

wxml布局代码

<!-- 遮罩层的样式 -->
<view class="page" bindtouchmove="touchMove" hidden="{{!hideModal}}" wx:if="{{show}}"><!-- 内容视图样式 --><view class="content" style="transform:translateY({{translateY}}px);" animation="{{animate}}"><view class="header" bindtouchstart="touchStart"><image class="headerFork" bindtap="hideModal" src="/static/images/close.png"></image><view class="time" ><view class="time_text"><view>开始时间：{{startyear}}年{{startmonth}}月{{startday}}日</view></view><view class="item_time"><picker-view indicator-class="picker_active" mask-class="mask" value="{{startvalue}}" data-type="start" style="width: 100%; height: 200rpx;" bindchange="bindChange"><picker-view-column><view class="timeText" wx:for="{{years}}" wx:key="index">{{item}}年</view></picker-view-column><picker-view-column><view class="timeText" wx:for="{{months}}" wx:key="index" bindchange="monthChange">{{item}}月</view></picker-view-column><picker-view-column><view class="timeText" wx:for="{{days}}" wx:key="index">{{item}}日</view></picker-view-column></picker-view></view><view class="time_text"><view>结束时间：{{endyear}}年{{endmonth}}月{{endday}}日</view></view><view class="item_time"><picker-view indicator-class="picker_active" mask-class="mask" style="width: 100%; height: 200rpx;" value="{{endvalue}}" data-type="end" bindchange="bindChange"><picker-view-column><view class="timeText" wx:for="{{years}}" wx:key="index">{{item}}年</view></picker-view-column><picker-view-column><view class="timeText" wx:for="{{months}}" wx:key="index">{{item}}月</view></picker-view-column><picker-view-column><view class="timeText" wx:for="{{days}}" wx:key="index">{{item}}日</view></picker-view-column></picker-view></view></view></view><!-- 按钮 --><view class="button" bindtap="confirm"><view class="view">确认</view></view></view>
</view>

wxss样式代码

.page {position: fixed;top: 0;left: 0;z-index: 1000;width: 100vw;height: 100vh;background: rgba(0, 0, 0, 0.5);display: flex;flex-direction: column;justify-content: flex-end;
}.content {width: 100vw;background: rgba(255, 255, 255, 1);border-radius: 16rpx 16rpx 0rpx 0rpx;
}.header {width: 100vw;padding: 24rpx 50rpx;box-sizing: border-box;
}.header .headerFork {position: absolute;top: 26rpx;left: calc(100% - 60rpx);width: 36rpx;height: 36rpx;opacity: 0.3;border-radius: 50%;
}.headerContent {width: 198rpx;height: 198rpx;border-radius: 8rpx;
}.headerContent .headerContentImage {width: 100%;height: 100%;border-radius: 8rpx;
}.header .money {font-size: 48rpx;font-family: Medium;font-weight: 500;color: #FA5151;margin-left: 24rpx;
}.smallMoney {font-size: 30rpx;
}.header>.headerNumber>.name {height: 30rpx;font-size: 30rpx;font-family: Medium;font-weight: 500;color: #181818;line-height: 30rpx;
}.button {width: 100vw;padding: 32rpx 24rpx;border-top: 2rpx solid #f5f5f5;position: relative;z-index: 100;
}.button .view {width: calc(100% - 48rpx);height: 80rpx;border-radius: 50rpx;line-height: 80rpx;text-align: center;font-size: 30rpx;font-family: Regular;font-weight: 400;color: #fff;background: #409eff;opacity: 1;
}
.timeText{font-size: 28rpx;line-height: 68rpx;font-family: Medium;font-weight: 500;color: #181818;text-align: center;
}
.time_text {text-align: center;margin-top: 32rpx;margin-bottom: 14rpx;font-size: 30rpx;font-family: Medium;font-weight: 500;color: #181818;
}

js 逻辑代码

 
let pageY = 0
const date = new Date()
const years = []
const months = []
const days = []
// 获取当前日期的年月日
var currentYear = new Date().getFullYear();
var currentMonth = new Date().getMonth() + 1;
var currentDate = new Date().getDate();
// 当前月份包含的天数
var maxDate = new Date(currentYear, currentMonth, 0).getDate();
// 所有的年份
for (let i = 1990; i <= date.getFullYear(); i++) {years.push(i)
}
// 所有的月份
for (let i = 1; i <= 12; i++) {months.push((i + "").padStart(2, '0'))
}
// 当前月份包含的所有天数
for (let i = 1; i <= maxDate; i++) {days.push((i + "").padStart(2, '0'))
}Component({options: {styleIsolation: 'isolated', //样式隔离},/*** 组件的属性列表*/properties: {show: {type: Boolean,value: false},},/*** 数据监听*/observers: {'show': function (value) {if (value) {this.showModal()} else {this.hideModal()}}},/*** 组件的初始数据*/data: {// 时间控件years: years,months: months,days: days,// 开始日期文字startyear: '',startmonth: '',startday: '',// 时间控件开始时间startvalue: [],// 结束日期文字endyear: '',endmonth: '',endday: '',// 时间控件结束时间endvalue: [],animate: '',hideModal: false, //模态框的状态  false-隐藏  true-显示},/*** 组件的方法列表*/methods: {// 显示遮罩层showModal() {this.setData({hideModal: true, //点击之后是否显示})const animation = wx.createAnimation({duration: 500, //反应的时间timingFunction: 'ease', //动画效果})// 先显示背景再执行动画，translateY(0)偏移量为0代表显示默认高度setTimeout(() => {animation.translateY(0).step()this.setData({animate: animation.export()})this.timeShow()}, 0)},// 隐藏遮罩层hideModal() {const animation = wx.createAnimation({duration: 500,timingFunction: 'ease',})// 设置为100vh可以确保滚动到底部，可以按照自己的内容高度设置，能够滑到底部即可animation.translateY('100vh').step()this.setData({animate: animation.export(),})// 先执行动画，再隐藏组件setTimeout(() => {this.setData({hideModal: false})this.triggerEvent('hideModal', true)}, 300)},// 移动touchMove(e) {const clientY = e.changedTouches[0].clientYif (clientY - pageY > 0 && clientY - pageY > 50) {this.hideModal()}},// 触摸开始touchStart(e) {pageY = e.changedTouches[0].clientY},// 时间更改bindChange(e) {const val = e.detail.value;var newDays = [];var maxDate = new Date(this.data.years[val[0]], this.data.months[val[1]], 0).getDate();// 选择月份包含的所有天数for (let i = 1; i <= maxDate; i++) {newDays.push((i + "").padStart(2, '0'))}// 时间文字内容更改if (e.target.dataset.type == 'start') { //开始时间//判断月份是否发生改变---月份改变 对应的当月包含天数改变并且定位到1号if (this.data.startmonth != this.data.months[val[1]]) {this.setData({days: newDays,startvalue: [val[0], val[1], 0],startyear: this.data.years[val[0]],startmonth: this.data.months[val[1]],startday: days[0]})} else {this.setData({startyear: this.data.years[val[0]],startmonth: this.data.months[val[1]],startday: this.data.days[val[2]]})}} else { //结束时间//判断月份是否发生改变---月份改变 对应的当月包含天数改变并且定位到1号console.log(days[0])if (this.data.endmonth != this.data.months[val[1]]) {this.setData({days: newDays,endvalue: [val[0], val[1], 0],endyear: this.data.years[val[0]],endmonth: this.data.months[val[1]],endday: days[0]})} else {this.setData({days: newDays,endyear: this.data.years[val[0]],endmonth: this.data.months[val[1]],endday: this.data.days[val[2]]})}}},timeShow() {// 获取时间控件---默认的开始时间和结束时间var defaultYear = years.length - 1;var defaultMonth = currentMonth;var defaultDate = currentDate - 1;this.setData({// 开始日期文字startyear: currentYear,startmonth: currentMonth,startday: currentDate,// 时间控件开始时间startvalue: [defaultYear, defaultMonth, defaultDate],// 结束日期文字endyear: currentYear,endmonth: currentMonth,endday: currentDate,// 时间控件结束时间endvalue: [defaultYear, defaultMonth, defaultDate],})},// 确认按钮事件confirm() {let {startyear,startmonth,startday,endyear,endmonth,endday} = this.datalet obj = {start: startyear + '-' + startmonth + '-' + startday, //开始时间end: endyear + '-' + endmonth + '-' + endday //结束时间}this.hideModal()this.triggerEvent('confirm', obj)},},
})

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