##WXML`
<view class="tui-picker-content"><view class="tui-picker-name">时间选择器（选择时分）</view><picker mode="time" value="{{time}}" start="09:00" end="17:30" bindchange="changeTime"><view class="tui-picker-detail">午饭时间: {{time}} </view></picker></view><view class="tui-picker-content"><view class="tui-picker-name">日期选择器（选择年月日）</view><picker mode="date" value="{{date}}" start="-10-01" end="-10-08" bindchange="changeDate"><view class="tui-picker-detail">国庆出游: {{date}}</view></picker></view><view class="tui-picker-content"><view class="tui-picker-name">日期时间选择器（精确到秒）</view><picker mode="multiSelector" value="{{dateTime}}" bindchange="changeDateTime" bindcolumnchange="changeDateTimeColumn" range="{{dateTimeArray}}"><view class="tui-picker-detail">选择日期时间: {{dateTimeArray[0][dateTime[0]]}}-{{dateTimeArray[1][dateTime[1]]}}-{{dateTimeArray[2][dateTime[2]]}} {{dateTimeArray[3][dateTime[3]]}}:{{dateTimeArray[4][dateTime[4]]}}:{{dateTimeArray[5][dateTime[5]]}}</view></picker></view><view class="tui-picker-content"><view class="tui-picker-name">日期时间选择器（精确到分）</view><picker mode="multiSelector" value="{{dateTime1}}" bindchange="changeDateTime1" bindcolumnchange="changeDateTimeColumn1" range="{{dateTimeArray1}}"><view class="tui-picker-detail">选择日期时间: {{dateTimeArray1[0][dateTime1[0]]}}-{{dateTimeArray1[1][dateTime1[1]]}}-{{dateTimeArray1[2][dateTime1[2]]}} {{dateTimeArray1[3][dateTime1[3]]}}:{{dateTimeArray1[4][dateTime1[4]]}}</view></picker></view>
##JS
var dateTimePicker = require('../../utils/dateTimePicker.js');Page({data: {date: '-10-01',time: '12:00',dateTimeArray: null,dateTime: null,dateTimeArray1: null,dateTime1: null,startYear: 2000,endYear: 2050},onLoad(){// 获取完整的年月日 时分秒，以及默认显示的数组var obj = dateTimePicker.dateTimePicker(this.data.startYear, this.data.endYear);var obj1 = dateTimePicker.dateTimePicker(this.data.startYear, this.data.endYear);// 精确到分的处理，将数组的秒去掉var lastArray = obj1.dateTimeArray.pop();var lastTime = obj1.dateTime.pop();this.setData({dateTime: obj.dateTime,dateTimeArray: obj.dateTimeArray,dateTimeArray1: obj1.dateTimeArray,dateTime1: obj1.dateTime});},changeDate(e){this.setData({date:e.detail.value});},changeTime(e){this.setData({time: e.detail.value });},changeDateTime(e){this.setData({dateTime: e.detail.value });},changeDateTime1(e) {this.setData({dateTime1: e.detail.value });},changeDateTimeColumn(e){var arr = this.data.dateTime, dateArr = this.data.dateTimeArray;arr[e.detail.column] = e.detail.value;dateArr[2] = dateTimePicker.getMonthDay(dateArr[0][arr[0]], dateArr[1][arr[1]]);this.setData({dateTimeArray: dateArr,dateTime: arr});},changeDateTimeColumn1(e) {var arr = this.data.dateTime1, dateArr = this.data.dateTimeArray1;arr[e.detail.column] = e.detail.value;dateArr[2] = dateTimePicker.getMonthDay(dateArr[0][arr[0]], dateArr[1][arr[1]]);this.setData({dateTimeArray1: dateArr,dateTime1: arr});}})
外部JS，dateTimePicker.js的引入
function withData(param){return param < 10 ? '0' + param : '' + param;}function getLoopArray(start,end){var start = start || 0;var end = end || 1;var array = [];for (var i = start; i <= end; i++) {array.push(withData(i));}return array;}function getMonthDay(year,month){var flag = year % 400 == 0 || (year % 4 == 0 && year % 100 != 0), array = null;switch (month) {case '01':case '03':case '05':case '07':case '08':case '10':case '12':array = getLoopArray(1, 31)break;case '04':case '06':case '09':case '11':array = getLoopArray(1, 30)break;case '02':array = flag ? getLoopArray(1, 29) : getLoopArray(1, 28)break;default:array = '月份格式不正确，请重新输入！'}return array;}function getNewDateArry(){// 当前时间的处理var newDate = new Date();var year = withData(newDate.getFullYear()),mont = withData(newDate.getMonth() + 1),date = withData(newDate.getDate()),hour = withData(newDate.getHours()),minu = withData(newDate.getMinutes()),seco = withData(newDate.getSeconds());return [year, mont, date, hour, minu, seco];}function dateTimePicker(startYear,endYear,date) {// 返回默认显示的数组和联动数组的声明var dateTime = [], dateTimeArray = [[],[],[],[],[],[]];var start = startYear || 1978;var end = endYear || 2100;// 默认开始显示数据var defaultDate = date ? [...date.split(' ')[0].split('-'), ...date.split(' ')[1].split(':')] : getNewDateArry();// 处理联动列表数据/*年月日 时分秒*/ dateTimeArray[0] = getLoopArray(start,end);dateTimeArray[1] = getLoopArray(1, 12);dateTimeArray[2] = getMonthDay(defaultDate[0], defaultDate[1]);dateTimeArray[3] = getLoopArray(0, 23);dateTimeArray[4] = getLoopArray(0, 59);dateTimeArray[5] = getLoopArray(0, 59);dateTimeArray.forEach((current,index) => {dateTime.push(current.indexOf(defaultDate[index]));});return {dateTimeArray: dateTimeArray,dateTime: dateTime}}module.exports = {dateTimePicker: dateTimePicker,getMonthDay: getMonthDay}
总结
将初始化列表以及初始化默认显示的数组放到dateTimePicker.js，防止页面逻辑太乱，而且可以多处使用；
判断是否为闰年，在三木表达式中，必须将能别400整除放在前边，因为或运算只要一个条件满足，就会返回true，不会执行后续表达式；
switch case的合并方法需要注意格式；
如果只需要联动列表更新，二结果展示栏不更新，则在changeDateTimeColumn函数中只更新dateTimeArray的值
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版权声明：本文为CSDN博主「Rattenking」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：/m0_38082783/article/details/78921283
