微信小程序之底部弹框预约插件

代码地址如下：
http://www.demodashi.com/demo/13982.html

一、前期准备工作：

软件环境：微信开发者工具
官方下载地址：https://mp.weixin.qq.com/debug/wxadoc/dev/devtools/download.html

1、基本需求。

实现用户预约
时间可选
预约类型更具需求可自定义

2、案例目录结构

二、程序实现步骤：

1.预约index.wxml代码

    <!--index.wxml-->
    <view class="modals modals-bottom-dialog" hidden="{{hideModal}}"> 
        <view class="modals-cancel" bindtap="hideModal"></view> 
        <view class="bottom-dialog-body bottom-pos" animation="{{animationData}}">
        <view class="swiper-tab">   
          <scroll-view class="scroll-view_H" scroll-x>
            <view class='list' style='width:{{ width }}rpx'>
              <view bindtap="select" wx:for="{{ calendar }}" wx:for-item="item" wx:for-index="index" data-index="{{ index }}" class='listItem {{index == currentTab ? "current":""}}' wx:key='' data-date="{{ item.date}}">
                <text class='name'>{{ item.week }}</text>
                <text class='date'>{{ item.date }}</text>
              </view>
            </view>
          </scroll-view>
        </view>  
        <swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:500rpx">  
          <swiper-item wx:for="{{ calendar }}" wx:key='' catchtouchmove="stopTouchMove"   >
            <!-- 作品 -->     
            <view class='time'>
              <view wx:for="{{ timeArr }}" wx:for-item="timeItem" wx:for-index="timeIndex" data-tindex="{{ timeIndex }}" data-time="{{ timeItem.time}}" bindtap='selectTime' class='listItem {{ currentTime == timeIndex ? "current":"" }}' wx:key=''>
                <text>{{ timeItem.time }}</text>
                <text>{{ timeItem.status }}</text>
              </view>
            </view>
          </swiper-item>    
        </swiper>
        </view> 
    </view> 
    <button bindtap="showModal">点我预约</button>

2.预约index.wxss代码

/**index.wxss**/
/*模态框*/ 
.modals{
    position:fixed; 
    z-index: 999; 
    top:0; 
    left: 0; 
    right:0; 
    bottom: 0;
} 
.modals-cancel{
    position:absolute; 
    z-index:1000; 
    top:0; left: 0; 
    right:0; 
    bottom: 0; 
    background-color: rgba(0,0,0,.5);
} 
.bottom-dialog-body{
    position:absolute; 
    z-index:10001; 
    bottom:0; 
    left:0; 
    right:0; 
    height:600rpx; 
    background-color: #fff;
} 
/*动画前初始位置*/ 
.bottom-pos{
    -webkit-transform:translateY(100%);
    transform:translateY(100%);
}
/* pages/orderTime/index.wxss */
scroll-view{
  height: 128rpx;
 
  width: 100%;
}
scroll-view .list{
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-start;
    width: 1302rpx; 
}
scroll-view .listItem{
  text-align: center;
  width: 186rpx;
  height: 128rpx;
  background-color: #f1f2f6;
  padding-top: 30rpx;
  box-sizing: border-box;
  /* float: left; */
  display: inline-block;
}
scroll-view .listItem text{
  display: block;
}
scroll-view .listItem .name{
  font-size: 30rpx;
}
scroll-view .listItem .date{
  font-size: 30rpx;
}
scroll-view .current{
  background-color: #76aef8;

}
scroll-view .current text{
  color: #fff;
}
.time{
  width: 95%;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  margin: 0 auto;
  margin-top: 30rpx;
}
.time .listItem{
  width: 30%;
  height: 120rpx;
  text-align: center;
  box-sizing: border-box;
  background-color: #fff;
  padding-top: 20rpx;
  border: 1px solid #b9c1c8;
  border-radius: 50rpx;
  margin-left: 5%;
  margin-bottom: 20rpx;
}
.time .listItem:first-child{  
  margin-left: 0%;
}
.time .listItem:nth-child(4){  
  margin-left: 0%;
}
.time .listItem:nth-child(7){  
  margin-left: 0%;
}
.time .listItem text{
  display: block;
  font-size: 30rpx;
}
.time .current{
  border: 1px solid #76aef8;
}
.time .current text{
  color: #76aef8;
}

3.预约index.js逻辑代码

a.遮罩层的显示、隐藏

// 显示遮罩层 
  showModal: function () { 
    var that=this; 
    that.setData({ 
      hideModal:false 
    }) 
    var animation = wx.createAnimation({ 
      duration: 600,//动画的持续时间 默认400ms 数值越大，动画越慢 数值越小，动画越快 
      timingFunction: 'ease',//动画的效果 默认值是linear 
    }) 
    this.animation = animation 
    setTimeout(function(){ 
      that.fadeIn();//调用显示动画
    },200)
  },

  // 隐藏遮罩层 
  hideModal: function () {
    var that=this;
    var animation = wx.createAnimation({
      duration: 800,//动画的持续时间 默认400ms 数值越大，动画越慢 数值越小，动画越快 
      timingFunction: 'ease',//动画的效果 默认值是linear
    })
    this.animation = animation
    that.fadeDown();//调用隐藏动画
    setTimeout(function(){
      that.setData({ hideModal:true })
    },720)//先执行下滑动画，再隐藏模块
  },

b.底部弹出动画集

  //动画集
  fadeIn:function(){
    this.animation.translateY(0).step() 
    this.setData({
      animationData: this.animation.export()//动画实例的export方法导出动画数据传递给组件的animation属性
    })
  },
  fadeDown:function(){    this.animation.translateY(300).step()
    this.setData({
      animationData: this.animation.export(),
    })
  },

c.利用构造函数创建对象,限制要渲染的日历数据天数为7天以内（用户体验）

// 计算每月第一天是星期几
    function getFirstDayOfWeek(year, month) {
      return new Date(Date.UTC(year, month - 1, 1)).getDay();
    }
    const date = new Date();
    const cur_year = date.getFullYear();
    const cur_month = date.getMonth() + 1;
    const cur_date=date.getDate();
    const weeks_ch = ['日', '一', '二', '三', '四', '五', '六'];
    //利用构造函数创建对象
    function calendar(date,week){
      this.date=cur_year+'-'+cur_month+'-'+date;
      if(date==cur_date){
        this.week = "今天";
      }else if(date==cur_date+1){
        this.week = "明天";
      }else{
        this.week = '星期' + week;
      }
    }
    //当前月份的天数
    var monthLength= getThisMonthDays(cur_year, cur_month)
    //当前月份的第一天是星期几
    var week = getFirstDayOfWeek(cur_year, cur_month)
    var x = week;
    for(var i=1;i<=monthLength;i++){
      //当循环完一周后，初始化再次循环
      if(x>6){
        x=0;
      }
      //利用构造函数创建对象
      that.data.calendar[i] = new calendar(i, [weeks_ch[x]][0])
      x++;
    }
    //限制要渲染的日历数据天数为7天以内（用户体验）
    var flag = that.data.calendar.splice(cur_date, that.data.calendar.length - cur_date <= 7 ? that.data.calendar.length:7)
    that.setData({
      calendar: flag
    })

d.点击tab切换,禁止手动滑动底部日期

/** 
   * 点击tab切换 
   */  
  swichNav: function( e ) {  
    var that = this;  
    if( this.data.currentTab === e.target.dataset.current ) {  
      return false;  
    } else {  
      that.setData( {  
        currentTab: e.target.dataset.current  
      })  
    }  
  },
  // 禁止手动滑动
  stopTouchMove: function() {
    return false;
  }