【微信小程序】日历插件，适用于酒店订房类小程序

本插件在原作者（传送门：http://blog.csdn.net/lengyue1084/article/details/71248778）基础上升级。

增加了点击选择具体日期和数据传输功能。

效果图：

1、WXML

<view class="page">
  <view class="box">
    <view class="box-flex">
      <view class="flex-item">
        <view class="item-content" bindtap="doDay" data-key='left'>
          <view class="glyphicon glyphicon-triangle-left"></view>
        </view>
      </view>
      <view class="flex-item item-content-current-day">
        <view class="item-content">{{currentDate}}</view>
      </view>
      <view class="flex-item">
        <view class="item-content" bindtap="doDay" data-key="right">
          <view class="glyphicon glyphicon-triangle-right"></view>
        </view>
      </view>
    </view>
    <view class="box-flex">
      <view class="flex-item">
        <view class="item-content">一</view>
      </view>
      <view class="flex-item">
        <view class="item-content">二</view>
      </view>
      <view class="flex-item">
        <view class="item-content">三</view>
      </view>
      <view class="flex-item">
        <view class="item-content">四</view>
      </view>
      <view class="flex-item">
        <view class="item-content">五</view>
      </view>
      <view class="flex-item">
        <view class="item-content">六</view>
      </view>
      <view class="flex-item">
        <view class="item-content">日</view>
      </view>
    </view>
    <view class="box-flex">
      <view class="flex-item" wx:for="{{currentDayList}}" wx:for-index='key' wx:for-item="vo" wx:key="{{key}}">
          <view data-day="{{vo}}" bindtap='selectDay' class="item-content {{!selectCSS}}" wx:if="{{currentDay != vo}}">{{vo}}</view>
          <view data-day="{{vo}}" bindtap='selectDay'  class="item-content {{selectCSS}}" wx:else>{{vo}}</view>
      </view>
    </view>
  </view>
</view>

2、JS

var app = getApp();
Page({
    data: {
        currentDate: "2017年05月03日",
        dayList: '',
        currentDayList: '',
        currentObj: '',
        currentDay: '',

        //日期初始化选中样式
        selectCSS: 'bk-color-day',
    },
    onLoad: function (options) {
      var that = this;
      console.log(options);
        var currentObj = this.getCurrentDayString()
        this.setData({
            currentDate: currentObj.getFullYear() + '/' + (currentObj.getMonth() + 1) + '/' + currentObj.getDate(),
            currentDay: currentObj.getDate(),
            currentObj: currentObj,
        /*  获取当前的年、月  */
            currentYear: currentObj.getFullYear(),
            currentMonth: (currentObj.getMonth() + 1),
        })
        this.setSchedule(currentObj);
    },
    doDay: function (e) {
      var that = this;
        console.log(e);

        var currentObj = that.data.currentObj
        var Y = currentObj.getFullYear();
        var m = currentObj.getMonth() + 1;
        var d = currentObj.getDate();
        var str = ''
        if (e.currentTarget.dataset.key == 'left') {
            m -= 1
            if (m <= 0) {
                str = (Y - 1) + '/' + 12 + '/' + d
            } else {
                str = Y + '/' + m + '/' + d
            }
        } else {
            m += 1
            if (m <= 12) {
                str = Y + '/' + m + '/' + d
            } else {
                str = (Y + 1) + '/' + 1 + '/' + d
            }
        }
        currentObj = new Date(str)
        this.setData({
            currentDate: currentObj.getFullYear() + '/' + (currentObj.getMonth() + 1) + '/' + currentObj.getDate(),
            currentObj: currentObj,
        /*  获取当前的年、月  */
            currentYear: currentObj.getFullYear(),
            currentMonth: (currentObj.getMonth() + 1),
        })
        console.log("选择当前年：" + that.data.currentYear);
        console.log("选择当前月：" + that.data.currentMonth);
        this.setSchedule(currentObj);
    },
    getCurrentDayString: function () {
        var objDate = this.data.currentObj
        if (objDate != '') {
            return objDate
        } else {
            var c_obj = new Date()
            var a = c_obj.getFullYear() + '/' + (c_obj.getMonth() + 1) + '/' + c_obj.getDate()
            return new Date(a)
        }
    },
    setSchedule: function (currentObj) {
      console.log(currentObj);
        var that = this
        var m = currentObj.getMonth() + 1
        var Y = currentObj.getFullYear()
        var d = currentObj.getDate();
        var dayString = Y + '/' + m + '/' + currentObj.getDate()
        var currentDayNum = new Date(Y, m, 0).getDate()
        var currentDayWeek = currentObj.getUTCDay() + 1
        var result = currentDayWeek - (d % 7 - 1);
        var firstKey = result <= 0 ? 7 + result : result;
        var currentDayList = [];
        var f = 0
        for (var i = 0; i < 42; i++) {
            let data =[]
            if (i < firstKey - 1) {
                currentDayList[i] = ''
            } else {
                if (f < currentDayNum) {
                  currentDayList[i] = f+1;
                  f = currentDayList[i]
                } else if (f >= currentDayNum) {
                    currentDayList[i] = ''
                }
            }
        }
        that.setData({
            currentDayList: currentDayList
        })
    },

//选择具体日期方法--xzz1211
    selectDay:function(e){
      var that = this;
      console.log(e);
      that.setData({
        currentDay: e.target.dataset.day,//选择的数据，非真实当前日期
        currentDa: e.target.dataset.day, //选择某月具体的一天
        currentDate: that.data.currentYear + '/' + that.data.currentMonth + '/' + e.target.dataset.day,//真实选择数据
      })
      console.log("当前选择日期：" + that.data.currentDate);
    }
})

3、CSS

/* pages/workspace/workspace/schedule/schedule.wxss */
@import '../../dist/css/icon.wxss';
page {
  background-color: #2a8cef;
  background:-webkit-gradient(linear, 0 0, 0 bottom, from(#2a8cef), to(#8A2BE2));
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  flex-wrap: nowrap;
  justify-content: flex-start;
  align-items: stretch;
  font-size: 14px;
}

.box {
  display: block;
  margin: 10px;
}

.box-flex {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  flex-wrap: wrap;
}

.flex-item {
  flex-flow: nowrap;
  flex-grow: 1;
  flex-shrink: 1;
  width: 14.2%;
}

.item-content {
  margin: 5px;
  padding: 0 10px;
  text-align: center;
  background-color: #000;
  height: 2rem;
  line-height: 2rem;
  color: #fff;
}

.bk-color-day {
  background-color: #8A2BE2;
}

.item-content-current-day {
  flex-grow: 2;
}

4、其中，@import '../../dist/css/icon.wxss';  引入了bootstrap字体图标，自己去GIT上下载，连接：https://github.com/lengyue1084/wxapp-calendar