微信小程序自定義帶價格顯示日歷效果

更新時間：2021年04月27日 11:44:23 作者：only-Love

這篇文章主要為大家詳細介紹了微信小程序自定義帶價格顯示日歷效果，文中示例代碼介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了微信小程序自定義日歷效果的具體代碼，供大家參考，具體內(nèi)容如下

JS代碼：

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;
 // 頁面初始化 options為頁面跳轉(zhuǎn)所帶來的參數(shù)
 this.createDateListData();
 this.setData({
  year: year,
  month: month
 })
 wx.getSystemInfo({
  success: function(res) {
  _this.setData({
   systemInfo: res,
  });
  }
 })
 },
 onReady: function() {
 // 頁面渲染完成
 },
 onShow: function() {
 
 },
 
 /**創(chuàng)建日歷數(shù)據(jù) */
 createDateListData: function(setYear, setMonth) {
 //全部時間的月份都是按0~11基準，顯示月份才+1
 let dateArr = []; //需要遍歷的日歷數(shù)組數(shù)據(jù)
 let arrLen = 0; //dateArr的數(shù)組長度
 let now = setYear ? new Date(setYear, setMonth) : new Date();
 let year = setYear || now.getFullYear();
 let nextYear = 0;
 let month = setMonth || now.getMonth();
 //沒有+1方便后面計算當月總天數(shù)
 let nextMonth = (month + 1) > 11 ? 1 : (month + 1);
 console.log("當前選中月nextMonth：" + nextMonth);
 //目標月1號對應的星期
 let startWeek = this.getWeek(year, nextMonth, 1); //new Date(year + ',' + (month + 1) + ',' + 1).getDay(); 
 console.log("目標月1號對應的星期startWeek:" + startWeek);
 //獲取目標月有多少天
 let dayNums = this.getTotalDayByMonth(year, nextMonth); //new Date(year, nextMonth, 0).getDate();   
 console.log("獲取目標月有多少天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)
  //當天之前的日期不可用
  clazz = 'unavailable ' + clazz;
  else
  clazz = '' + clazz
  /**如果當前日期已經(jīng)選中，則變色 */
  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
 })
 },
 /**
 * 上個月
 */
 lastMonthEvent:function(){
 //全部時間的月份都是按0~11基準，顯示月份才+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);
 },
 /**
 * 下個月
 */
 nextMonthEvent:function(){
 //全部時間的月份都是按0~11基準，顯示月份才+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);
 },
 /*
 * 獲取月的總天數(shù)
 */
 getTotalDayByMonth: function(year, month) {
 month = parseInt(month, 10);
 var d = new Date(year, month, 0);
 return d.getDate();
 },
 /*
 * 獲取月的第一天是星期幾
 */
 getWeek: function(year, month, day) {
 var d = new Date(year, month - 1, day);
 return d.getDay();
 },
 /**
 * 點擊日期事件
 */
 onPressDateEvent: function(e) {
 var {
  year,
  month,
  day,
  amount
 } = e.currentTarget.dataset;
 console.log("當前點擊的日期：" + year + "-" + month + "-" + day);
 //當前選擇的日期為同一個月并小于今天，或者點擊了空白處（即day<0），不執(zhí)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;
 //渲染點擊樣式
 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
 });
 
 },
 /**檢查數(shù)組中是否存在該元素 */
 checkItemExist: function (arr,value){
 for (var i = 0; i < arr.length; i++) {
  if (value === arr[i].day) {
  return i;
  }
 }
 return -1;
 }
})

WXML代碼

<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代碼

/* 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;
};
/**  
 * 對Date的擴展，將 Date 轉(zhuǎn)化為指定格式的String  
 * 月(M)、日(d)、12小時(h)、24小時(H)、分(m)、秒(s)、周(E)、季度(q) 可以用 1-2 個占位符  
 * 年(y)可以用 1-4 個占位符，毫秒(S)只能用 1 個占位符(是 1-3 位的數(shù)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})$/; //正則表達式 匹配出生日期(簡單匹配)  
  r.exec('1985-10-15');
  s1=RegExp.$1;s2=RegExp.$2;s3=RegExp.$3;//結(jié)果為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(), //小時 
 "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;
}
/**
 * 計算兩個日期差差
 * 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));//除不盡時,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);
}

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。

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