微信小程序自定义带价格显示日历效果
本文实例为大家分享了微信小程序自定义日历效果的具体代码，供大家参考，具体内容如下
JS代码：
var Moment = require("../../utils/moment.js");
var DATE_YEAR = new Date().getFullYear();
var DATE_MONTH = new Date().getMonth() + 1;
var DATE_DAY = new Date().getDate();
Page({
data: {
year: '',
month: '',
day: '',
days: {},
systemInfo: {},
weekStr: ['日', '一', '二', '三', '四', '五', '六'],
checkDate:[]
},
onLoad: function(options) {
var _this = this;
let now = new Date();
let year = now.getFullYear();
let month = now.getMonth() + 1;
// 页面初始化 options为页面跳转所带来的参数
this.createDateListData();
this.setData({
year: year,
month: month
})
wx.getSystemInfo({
success: function(res) {
_this.setData({
systemInfo: res,
});
}
})
},
onReady: function() {
// 页面渲染完成
},
onShow: function() {
},
/**创建日历数据 */
createDateListData: function(setYear, setMonth) {
//全部时间的月份都是按0~11基准，显示月份才+1
let dateArr = []; //需要遍历的日历数组数据
let arrLen = 0; //dateArr的数组长度
let now = setYear ? new Date(setYear, setMonth) : new Date();
let year = setYear || now.getFullYear();
let nextYear = 0;
let month = setMonth || now.getMonth();
//没有+1方便后面计算当月总天数
let nextMonth = (month + 1) > 11 ? 1 : (month + 1);
console.log("当前选中月nextMonth：" + nextMonth);
//目标月1号对应的星期
let startWeek = this.getWeek(year, nextMonth, 1); //new Date(year + ',' + (month + 1) + ',' + 1).getDay();
console.log("目标月1号对应的星期startWeek:" + startWeek);
//获取目标月有多少天
let dayNums = this.getTotalDayByMonth(year, nextMonth); //new Date(year, nextMonth, 0).getDate();
console.log("获取目标月有多少天dayNums:" + dayNums);
let obj = {};
let num = 0;
if (month + 1 > 11) {
nextYear = year + 1;
dayNums = new Date(nextYear, nextMonth, 0).getDate();
}
for (var j = -startWeek + 1; j <= dayNums; j++) {
var tempWeek = -1;
if (j > 0) {
tempWeek = this.getWeek(year, nextMonth, j);
//console.log(year + "年" + month + "月" + j + "日" + "星期" + tempWeek);
}
var clazz = '';
if (tempWeek == 0 || tempWeek == 6)
clazz = 'week'
if (j < DATE_DAY && year == DATE_YEAR && nextMonth == DATE_MONTH)
//当天之前的日期不可用
clazz = 'unavailable ' + clazz;
else
clazz = '' + clazz
/**如果当前日期已经选中，则变色 */
var date = year + "-" + nextMonth + "-" + j;
var index = this.checkItemExist(this.data.checkDate, date);
if (index != -1) {
clazz = clazz + ' active';
}
dateArr.push({
day: j,
class: clazz,
amount:'￥99.8'
})
}
this.setData({
days: dateArr
})
},
/**
* 上个月
*/
lastMonthEvent:function(){
//全部时间的月份都是按0~11基准，显示月份才+1
let year = this.data.month - 2 < 0 ? this.data.year - 1 : this.data.year;
let month = this.data.month - 2 < 0 ? 11 : this.data.month - 2;
this.setData({
year: year,
month: (month + 1)
})
this.createDateListData(year, month);
},
/**
* 下个月
*/
nextMonthEvent:function(){
//全部时间的月份都是按0~11基准，显示月份才+1
let year = this.data.month > 11 ? this.data.year + 1 : this.data.year;
let month = this.data.month > 11 ? 0 : this.data.month;
this.setData({
year: year,
month: (month + 1)
})
this.createDateListData(year, month);
},
/*
* 获取月的总天数
*/
getTotalDayByMonth: function(year, month) {
month = parseInt(month, 10);
var d = new Date(year, month, 0);
return d.getDate();
},
/*
* 获取月的第一天是星期几
*/
getWeek: function(year, month, day) {
var d = new Date(year, month - 1, day);
return d.getDay();
},
/**
* 点击日期事件
*/
onPressDateEvent: function(e) {
var {
year,
month,
day,
amount
} = e.currentTarget.dataset;
console.log("当前点击的日期：" + year + "-" + month + "-" + day);
//当前选择的日期为同一个月并小于今天，或者点击了空白处（即day<0），不执行
if ((day < DATE_DAY && month == DATE_MONTH) || day <= 0)
return;
this.renderPressStyle(year, month, day, amount);
},
renderPressStyle: function (year, month, day, amount) {
var days = this.data.days;
//渲染点击样式
for (var j = 0; j < days.length; j++) {
var tempDay = days[j].day;
if (tempDay == day) {
var date = year + "-" + month + "-" + day;
var obj = {
day: date,
amount: amount
};
var checkDateJson = this.data.checkDate;
var index = this.checkItemExist(checkDateJson, date);
if (index == -1) {
checkDateJson.push(obj);
days[j].class = days[j].class + ' active';
} else {
checkDateJson.splice(index, 1);
days[j].class = days[j].class.replace('active',' ');
}
this.setData({
checkDate: checkDateJson
})
console.log(JSON.stringify(this.data.checkDate));
break;
}
}
this.setData({
days: days
});
},
/**检查数组中是否存在该元素 */
checkItemExist: function (arr,value){
for (var i = 0; i < arr.length; i++) {
if (value === arr[i].day) {
return i;
}
}
return -1;
}
})
WXML代码
<view class="date-year-month"><image bindtap='lastMonthEvent' src='../../image/left.png'></image>{{year}}年{{month}}月<image src='../../image/right.png' bindtap='nextMonthEvent' ></image></view>
<view ></view>
<view>
<view style="background:#F5F5F5;font-size: 30rpx; ">
<view class="layout-flex row" style="background-color: #F5F5F5;">
<text class="date-week" style="width:{{systemInfo.windowWidth/7-10}}px;height:20px" wx:for="{{weekStr}}" wx:key="{{index}}">
<text wx:if="{{item !=='日' && item !=='六'}}">{{item}}</text>
<text wx:if="{{item ==='日' || item ==='六'}}" class="week">{{item}}</text>
</text>
</view>
</view>
<view class="layout-flex row" style="flex-wrap: wrap;margin-top:30rpx;">
<view class="date-day {{item.day<=0?'bgwhite':item.class}}" style="width:{{systemInfo.windowWidth/7-10}}px;height:{{systemInfo.windowWidth/7}}px;" data-year="{{year}}" data-month="{{month}}" data-day="{{item.day}}" data-amount="{{item.amount}}"bindtap="onPressDateEvent"
wx:for="{{days}}" wx:key="{{index}}">
<view class='item-days'>
<text>{{item.day>0?(item.daytext?item.daytext:item.day):''}}</text>
<text class='amount' wx:if='{{item.day>0}}'>{{item.amount}}</text>
</view>
</view>
</view>
</view>
WXSS代码
/* pages/dateSelect/dateSelect.wxss */
.date-day {
display: flex;
padding: 5px;
text-align: center;
justify-content: center;
align-items: center;
flex-direction: column;
}
.date-day.bgitem {
background-color: #d8ecf9;
}
.date-day.active {
background: #099fde;
color: #fff;
}
.date-day.unavailable {
color: #aaa;
}
.date-week {
display: flex;
justify-content: center;
align-content: center;
margin: 5px;
}
.week {
color: #099fde;
}
.row {
display: flex;
flex-direction: row;
}
.item-days {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
font-size: 35rpx;
}
.amount{
font-size: 30rpx;
}
.bgwhite {
background-color: #fff;
}
.date-year-month {
text-align: center;
font-size: 35rpx;
height: 100rpx;
line-height: 100rpx;
display: flex;
justify-content: center;
align-items: center;
}
.date-year-month image{
height: 50rpx;
width: 50rpx;
margin: 0 30rpx;
}
moment.js
var Moment = function (date) {
var date;
if (date)
this.date = new Date(date);
else
this.date = new Date();
return this;
};
/**
* 对Date的扩展，将 Date 转化为指定格式的String
* 月(M)、日(d)、12小时(h)、24小时(H)、分(m)、秒(s)、周(E)、季度(q) 可以用 1-2 个占位符
* 年(y)可以用 1-4 个占位符，毫秒(S)只能用 1 个占位符(是 1-3 位的数字)
* eg:
* "yyyy-MM-dd hh:mm:ss.S" ==> 2006-07-02 08:09:04.423
* "yyyy-M-d h:m:s.S" ==> 2006-7-2 8:9:4.18
* "yyyy-MM-dd E HH:mm:ss" ==> 2009-03-10 二 20:09:04
* "yyyy-MM-dd EE hh:mm:ss" ==> 2009-03-10 周二 08:09:04
* "yyyy-MM-dd EEE hh:mm:ss" ==> 2009-03-10 星期二 08:09:04
*/
Moment.prototype.format = function (format) {
var date = this.date;
/*
var r= /^(\d{4})-(\d{1,2})-(\d{1,2})$/; //正则表达式 匹配出生日期(简单匹配)
r.exec('1985-10-15');
s1=RegExp.$1;s2=RegExp.$2;s3=RegExp.$3;//结果为1985 10 15
*/
if (typeof date === 'string')
date = this.parse(date);
var o = {
"M+": date.getMonth() + 1, //月份
"(d+|D+)": date.getDate(), //日
"(h+|H+)": date.getHours(), //小时
"m+": date.getMinutes(), //分
"s+": date.getSeconds(), //秒
"q+": Math.floor((date.getMonth() + 3) / 3), //季度
"S": date.getMilliseconds() //毫秒
};
var week = {
"0": "/u65e5",
"1": "/u4e00",
"2": "/u4e8c",
"3": "/u4e09",
"4": "/u56db",
"5": "/u4e94",
"6": "/u516d"
};
if (/(y+|Y+)/.test(format))
format = format.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
if (/(E+)/.test(format))
format = format.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "/u661f/u671f" : "/u5468") : "") + week[date.getDay() + ""]);
for (var k in o) {
if (new RegExp("(" + k + ")").test(format))
format = format.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
}
return format;
}
Moment.prototype.parse = function () {
return this.date;
}
/**
* 计算两个日期差差
* return day
*/
Moment.prototype.differ = function (date) {
var time1 = this.date.getTime();
if (typeof date === 'string')
date = new Date(date);
var time1 = this.date.getTime();
var time2 = date.getTime();
var differ = Math.ceil((time1 - time2) / (1000 * 3600 * 24));//除不尽时,向上取整
return differ;
}
Moment.prototype.add = function (num, optionType) {
var date = this.date;
if ('day' === optionType) {
date.setDate(date.getDate() + num);
}
if ('month' === optionType) {
date.setMonth(date.getMonth() + num);
}
if ('year' === optionType) {
date.setFullYear(date.getFullYear() + num);
}
this.date = date;
return this;
}
Moment.prototype.before = function (date) {
return this.date.getTime() < new Date(date).getTime()
}
Moment.prototype.after = function (date) {
return this.date.getTime() > date.getTime()
}
module.exports = function (date) {
return new Moment(date);
}
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