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微信小程序日歷/日期選擇插件使用方法詳解

更新時間：2018年12月28日 11:39:28 作者：偌任

這篇文章主要為大家詳細介紹了微信小程序日歷和日期選擇插件的使用方法，具有一定的參考價值，感興趣的小伙伴們可以參考一下

微信小程序日歷選擇器插件點擊日歷日期可以獲取到年月日，具體內(nèi)容如下

wxml

<view class="canlendarBgView">
 <view class="canlendarView">
  <view class="canlendarTopView">
   <view class="leftBgView" bindtap="handleCalendar" data-handle="prev">
    <view class="leftView">《</view>
   </view>
   <view class="centerView">{{cur_year || "--"}} 年 {{cur_month || "--"}} 月</view>
   <view class="rightBgView" bindtap="handleCalendar" data-handle="next">
    <view class="rightView">》</view>
   </view>
  </view>
  <view class="weekBgView">
   <view class="weekView" wx:for="{{weeks_ch}}" wx:key="{{index}}" data-idx="{{index}}">{{item}}</view>
  </view>
  <view class="dateBgView">
   <view wx:if="{{hasEmptyGrid}}" class="dateEmptyView" wx:for="{{empytGrids}}" wx:key="{{index}}" data-idx="{{index}}">
   </view>
   <view class="dateView" wx:for="{{days}}" wx:key="{{index}}" data-idx="{{index}}" bindtap="dateSelectAction">
    <view class="datesView {{index == todayIndex ? 'dateSelectView' : ''}}">{{item}}</view>
   </view>
  </view>
 </view>
 <view>點擊日期選擇</view>
</view>

js

//index.js
//獲取應(yīng)用實例
Page({
 data: {
  hasEmptyGrid: false,
  cur_year: '',
  cur_month: '',
 },
 onLoad(options) {
  this.setNowDate();
 },
 
 dateSelectAction: function (e) {
  var cur_day = e.currentTarget.dataset.idx;
  this.setData({
   todayIndex: cur_day
  })
  console.log(`點擊的日期:${this.data.cur_year}年${this.data.cur_month}月${cur_day + 1}日`);
 },
 
 setNowDate: function () {
  const date = new Date();
  const cur_year = date.getFullYear();
  const cur_month = date.getMonth() + 1;
  const todayIndex = date.getDate() - 1;
  console.log(`日期：${todayIndex}`)
  const weeks_ch = ['日', '一', '二', '三', '四', '五', '六'];
  this.calculateEmptyGrids(cur_year, cur_month);
  this.calculateDays(cur_year, cur_month);
  this.setData({
   cur_year: cur_year,
   cur_month: cur_month,
   weeks_ch,
   todayIndex,
  })
 },
 
 getThisMonthDays(year, month) {
  return new Date(year, month, 0).getDate();
 },
 getFirstDayOfWeek(year, month) {
  return new Date(Date.UTC(year, month - 1, 1)).getDay();
 },
 calculateEmptyGrids(year, month) {
  const firstDayOfWeek = this.getFirstDayOfWeek(year, month);
  let empytGrids = [];
  if (firstDayOfWeek > 0) {
   for (let i = 0; i < firstDayOfWeek; i++) {
    empytGrids.push(i);
   }
   this.setData({
    hasEmptyGrid: true,
    empytGrids
   });
  } else {
   this.setData({
    hasEmptyGrid: false,
    empytGrids: []
   });
  }
 },
 calculateDays(year, month) {
  let days = [];
 
  const thisMonthDays = this.getThisMonthDays(year, month);
 
  for (let i = 1; i <= thisMonthDays; i++) {
   days.push(i);
  }
 
  this.setData({
   days
  });
 },
 handleCalendar(e) {
  const handle = e.currentTarget.dataset.handle;
  const cur_year = this.data.cur_year;
  const cur_month = this.data.cur_month;
  if (handle === 'prev') {
   let newMonth = cur_month - 1;
   let newYear = cur_year;
   if (newMonth < 1) {
    newYear = cur_year - 1;
    newMonth = 12;
   }
 
   this.calculateDays(newYear, newMonth);
   this.calculateEmptyGrids(newYear, newMonth);
 
   this.setData({
    cur_year: newYear,
    cur_month: newMonth
   })
 
  } else {
   let newMonth = cur_month + 1;
   let newYear = cur_year;
   if (newMonth > 12) {
    newYear = cur_year + 1;
    newMonth = 1;
   }
 
   this.calculateDays(newYear, newMonth);
   this.calculateEmptyGrids(newYear, newMonth);
 
   this.setData({
    cur_year: newYear,
    cur_month: newMonth
   })
  }
 }
})

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

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