微信小程序添加插屏广告并设置显示频率(一天一次)

let interstitialAd = null;
if (wx.createInterstitialAd) {
 interstitialAd = wx.createInterstitialAd({
  adUnitId: 'adunit-ID'
 })
}
if(interstitialAd) {
 interstitialAd.show().catch((err) => {
  console.error(err);
 })
}

//这里使用的是mpVue框架，写在mounted里。
let nowday = new Date().getFullYear().toString() + (new Date().getMonth() + 1).toString() + new Date().getDate().toString() ;

//获取上次打开页面时间
try {
 let lastDay = wx.getStorageSync('day');
 if(lastDay) {
  console.log('lastday', lastDay);
  console.log('nowday', nowday)
  if(lastDay == nowday) {
   this.flag = false;
  } else {
   this.flag = true;
  } 
 }
} catch (e) {
 //用户首次打开
 this.flag = true;
 console.error(e);
 console.log('true no storage', this.flag)
}

if(interstitialAd && this.flag) {
 interstitialAd.show().catch((err) => {
  console.error(err);
 })
}
interstitialAd.onLoad(() => {
 try {
  wx.setStorageSync('day', nowday);
  console.log('存储时间', nowday);
  } catch (e) { 
  console.log('err', err)
 }
})

<div class="header">
 <div class="header-a">
  <a href=""></a>
  <i class="close">x</i>
 </div>
</div> 

.header{
 width:100%;
 height:80px;
 background:#000;
}
.header-a{
 width:1190px;
 margin:0 auto;
 position:relative;
 background:url("images/1.jpg") no-repeat;
}
.header-a a{
 width:100%;
 height:80px;
 display:block;
}
.close{
 cursor:pointer;
 color:#fff;
 position:absolute;
 top:5px;
 right:5px;
 background:rgb(129, 117, 117);
 width: 20px;
 text-align: center;
 line-height: 20px;
} 

//localStorage方法
<script src="../js/jquery.min.js"></script>
function popAd(){
  //判断localStorage里有没有isClose
  if(localStorage.getItem("isClose")){    
   $(".header").hide();
  }else{
   $(".header").show();
  }
  //点击关闭隐藏图片存取数据
  $(".close").click(function(){
   $(".header").fadeOut(1000);

   localStorage.setItem("isClose", "1"); 
  })
 }
 popAd();

localStorage.clear("popup_info") 或 localStorage.removeItem("popup_info");