微信小程序中怎么添加一个弹出广告

<!-- 广告展示 -->
 
<view class="AdView" hidden="{{showAd}}" catchtouchmove="preventMove">
<view class="bg" ></view>
<view class="active active-sport" >
<view class="cancel" bind:tap = "cancelTap" ></view>
<view class="active-content" bind:tap ="activeContent" data-id='2340173092'>
 <text>this is ad</text>
 <image class="active-img" src ='cloud://international-3bp20.696e-international-3bp20-1300609829/my-image.jpeg' mode="aspectFit"></image>
</view>
</view>
</view>

.bg{
 width: 100%;
 height: 100%;
 position: fixed;
 top: 0;
 left: 0; 
 z-index: 990;
 background-color:rgb(180, 180, 180);
 opacity: 0.5;
}
.active{
 width: 80%;
 height:80%;
 background-color: #fff;
 position: absolute;
 top:10%;
 left:50%;
 transform: translate(-50%);
 
 z-index: 992;
}
.active-sport{
 animation: sport 1.5s linear 1;
}
@keyframes sport{
 from{ transform:rotate(0deg) skew(-10deg) scale(2.0) translate(-100%,0)}
 
 to{ transform:rotate(360deg) skew(0deg) scale(1.0) translate(-50%,0)}
}
.active-content{
 width: 80%;
 height:80%;
 background-color: blue ;
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%,-50%);
 text-align: center;
 
}
.active-img{
 width: 100%;
 
}
.cancel{
 background: url('data:image/svg+xml;base64,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') no-repeat 10rpx 10rpx/40rpx 40rpx;
width: 60rpx;
height: 60rpx;
position: absolute;
top:5rpx;
right: 5rpx;
z-index: 998;
 
}

// miniprogram/pages/demo/demo.js
Page({
 
 /**
 * 页面的初始数据
 */
 data: {
 playlist:[],
 showAd:false
 },
 //cancelTap隐藏方向
 cancelTap(){
 this.setData({showAd:!this.data.showAd});
 },
 //广告链接
 activeContent(event){
 console.log(event.currentTarget.dataset.id);
 // this.setData({showAd:!this.data.showAd});
 let musicId=event.currentTarget.dataset.id;
 wx.navigateTo({
 url:`../musicList/musicList?playlistId=${musicId}`, 
 
 success(){
 console.log('navigate success')
 },
 fail(err){
 console.log(err)
 }
 });
 
 },
 //阻止滚动穿透
 
 preventMove(e){
 console.log(e);
 },
 /**
 * 生命周期函数--监听页面加载
 */
 async onLoad(options) {
 this._getPlaylist();
 },
 
 async _getPlaylist(){
 wx.showLoading({
  title: '加载中',
 })
 let listCount = await wx.cloud.callFunction({
 name: 'music',
 data: {
 $url: 'getPlaylist',
 start: this.data.playlist.length,
 count: 15
 }
 })
 .then(res => { 
 console.log(res); 
 res.result.map(value=>{
  this.setData({
  playlist:this.data.playlist.concat(value)
  })
  
 })
 wx.hideLoading();
 return res.result.length;
 })
 .catch(err=>{console.error;wx.hideLoading();wx.showToast({
 title: '加载失败，稍后再试！',
 icon:'none',
 duration:1500
 })});
 
 return listCount;
 },
//tcbRouter 
 async tcbmusicTap(){
 let result = await wx.cloud.callFunction({
 name:'tcbRouter',
 data:{
  $url:'music'
 }
 })
 .then(res=>console.log(res))
 .catch(err=>console.error);
 },
 async tcbmovieTap(){
 let result = await wx.cloud.callFunction({
  name:'tcbRouter',
  data:{
  $url:'movie'
  }
 })
 .then(res=>console.log(res))
 .catch(err=>console.error);
 },
 
 /**
 * 生命周期函数--监听页面初次渲染完成
 */
 onReady: function () {
 
 },
 
 /**
 * 生命周期函数--监听页面显示
 */
 onShow: function () {
 // this.setData({showAd:false});
 },
 
 /**
 * 生命周期函数--监听页面隐藏
 */
 onHide: function () {
 
 },
 
 /**
 * 生命周期函数--监听页面卸载
 */
 onUnload: function () {
 
 },
 
 /**
 * 页面相关事件处理函数--监听用户下拉动作
 */
 async onPullDownRefresh() {
 this.setData({ playlist:[]});
 await this._getPlaylist();
 wx.stopPullDownRefresh();
 },
 
 /**
 * 页面上拉触底事件的处理函数
 */
 async onReachBottom() {
 
 let flag = await this._getPlaylist();
 
 if(!flag){
  wx.showToast({
  title: '我是一个有底的人!',
  duration:2000,
  image:'../../images/girl3.png'
  })
 }
 
 },
 
 /**
 * 用户点击右上角分享
 */
 onShareAppMessage: function () {
 
 }
})