javascript技巧

关注公众号 jb51net

关闭
首页 > 网络编程 > JavaScript > javascript技巧 > 微信小程序日期选择插件

微信小程序日历/日期选择插件使用方法详解

作者:偌任

这篇文章主要为大家详细介绍了微信小程序日历和日期选择插件的使用方法,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

微信小程序日历选择器插件点击日历日期可以获取到年月日,具体内容如下

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>点击日期选择</view>
</view>

js

//index.js
//获取应用实例
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(`点击的日期:${this.data.cur_year}年${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内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

您可能感兴趣的文章:
阅读全文